Please show work thank you The p-value of a test of H0: μ1≤μ2 versus Ha: μ1>μ2 is 0.04711. Determine the p-value of the test if the alternative was Ha: μ1≠μ2 instead. 0.9529 0.0942 0.9058 0.0471 0.0236
Q: Researchers from the University of British Columbia conducted trials to investigate the effects of c...
A: For Red Background: sample size:nRed = 35sample mean : x¯Red= 3.39sample standard deviation:sRed ...
Q: Suppose you read the following in a journal: “The group means did not differ significantly, t (30,1)...
A: a)Givenn1=40n2=55 The degree of freedom for t test is n1+n2-2=40+55-2=93The degree of freedom for t ...
Q: In an office, there are 2 secretaries. The probability that secretary 1 is present in any given day ...
A:
Q: Question G: Do the results of PART F agree with with the Empirical Rule? Explain. You can type your ...
A: Given: 30 15 40 40 40 30 50 40 100 30 30 30 30 150 30 30 50 ...
Q: Conduct a test at the α=0.01 level of significance by determining (a) the null and alternative hyp...
A: Given, α=0.01 level of significance The sample data are: x1=129, n1=241, x2=139, n2=312...
Q: A store manager gathers some demographic information from the store's customers. The following chart...
A:
Q: I just need B answered.....not sure how to get X2 or P-value Do males and females have the same dist...
A: chi square test: Null Hypothesis H0 Males and Females have same distribution of transportation...
Q: Write the binomial probability and the normal probability for the shaded region of the graph. Find t...
A: Here , Continuity correction concept is applicable. The result are about the same
Q: In a recent year, the scores for the reading portion of a test were normally distributed, with a m...
A: Hey, since there are multiple subparts posted, we will answer first three subparts. If you want any ...
Q: A doctor knows that the medical test for a certain health condition gives accurate results 67% of th...
A:
Q: 4. 15 healthy adult subjects were asked to walk on a treadmill while connected to monitors. One of t...
A: a) State the hypotheses. There is no evidence to conclude that mean effect of the first disturban...
Q: Help please.
A: n = 1500 x = 795 significance level = 0.05
Q: In a sporting event, the scoring area (shown here) consists of four concentric circles on the ice wi...
A:
Q: A scientist claims that pneumonia causes weight loss in mice. The table shows the weights (in grams)...
A: Before After d 19.4 19.2 0.2 19.8 19.8 0 21.5 21.4 0.1 20.7 20.8 -0.1 21.6 21.5 ...
Q: The amount of pollutants that are found in waterways near large cities is normally distributed with ...
A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for yo...
Q: Number 24
A: Given data provides different temperatures at number of cricket chirps in 1 minute . The following ...
Q: Statistics Question
A: Given information Hypothesized mean µ = 51900 Sample size (n) = 19 Mean x̅ = 52622 Standard deviati...
Q: Also need... Find standardized test statistic Find P Value Reject or fail to reject & is or is n...
A: Denote μ1, μ2 as the population means for population 1 and 2, respectively.
Q: Provide the following: IV (with 2 levels): DV: Ha: Ho: Solve the t-test below. A recent study...
A: Given Information : A recent study examined the drinking behaviors of undergraduate college student...
Q: The owner of a computer repair shop has determined that their daily revenue has mean $7200 and stand...
A: Mean = 7200 Standard deviation = 1200 Sample size = 30
Q: What is the answer for following data? 1) find the correlation coefficient? 2) identify the type of ...
A: Correlation: Correlation is the measure of association between two variables in which one variable i...
Q: According to a recent survey, the salaries of assistant professors have a mean of $41,750 and a stan...
A: Given information Mean µ = 41750 Standard deviation σ = 7500 proportion of assistant professors who ...
Q: 1. Based on census data, the unemployment rate for minority teenagers has been hovering steadily at ...
A: Let p^ be the sample unemployment rate p^ = 22.2% = 0.222 N: Random sample size = 180 It is requir...
Q: The average amount of money spent for lunch per person in the college cafeteria is $5.96 and the sta...
A: Note: Thank you for the question. Since multiple subparts are posted, according to our policy, we ...
Q: SAT scores are distributed with a mean of 1,500 and a standard deviation of 294. You are interested ...
A: From provided information, SAT scores are distributed with mean 1500 and standard deviation of 294. ...
Q: In a study of cell phone usage and brain hemispheric dominance, an Internet survey was e-mailed to 6...
A: Here, the claim of the test is that the return rate is less than 20%. The hypotheses are given below...
Q: CNNBC recently reported that the mean annual cost of auto insurance is 1016 dollars. Assume the stan...
A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for yo...
Q: Proctor & Gamble claims that at least half the bars of Ivory soap they produce are 99.44% pure (...
A: x = 46 n = 101
Q: You measure 38 turtles' weights, and find they have a mean weight of 49 ounces. Assume the populatio...
A: Given information- Sample size, n = 38 Sample mean, x-bar = 49 ounces Sample standard deviation, σ =...
Q: Show formulas please and thank you You are conducting a multinomial hypothesis test for the claim th...
A:
Q: The average wait time to get seated at a popular restaurant in the city on a Friday night is 12 minu...
A: Hey There.! Since you have posted multiple questions as per the guidlines we can answer the first th...
Q: You measure 38 turtles' weights, and find they have a mean weight of 49 ounces. Assume the populatio...
A: Mean = 49Population standard deviation = 12.2Sample size = 3895% confidence level
Q: A standard deck of cards contains 52 cards. One card is selected from the deck. (a) Compute the prob...
A: In a deck of cards, Total 52 cards are there No of six cards = 4 No of jack = 4 No of seven = 4 No o...
Q: 1) An insurance company has 500 clients. Based on an insurance model, the company predicts that the ...
A: Hypothesis Null Hypothesis: H0 – Insurance model is not a good fit to the data Alternative Hypothesi...
Q: 1. Suppose that you generate 20 random samples from the integers {0,1, ., 9}. What are the mean and ...
A: hello there! There are multiple questions given in the image shared. According to our principles can...
Q: A researcher would like to examine how the chemical tryptophan, contained in foods such as turkey, c...
A: A researcher would like to examine how the chemical tryptophan, contained in foods such as turkey, c...
Q: University at Buffalo claims that the average wait time to meet with counseling services 15 days. A ...
A: State the hypotheses. That is, the average wait time to meet with counseling services 15 days. Tha...
Q: The smaller screenshot is the current problem and the longer screenshot is the questions from a simi...
A: Since , it is given the smaller screenshot is the current problem: The claim at α = 0.04 , is that t...
Q: 2. The circumference of a species of tree was thought to be different depending on geographical fact...
A: State the hypotheses. There is no evidence to conclude that there is a difference in mean circumfer...
Q: A team of government researchers would like to determine whether a new tax on cigarettes has any eff...
A: From the provided information, Sample size (n) = 25 Sample mean (x̅) = 380 Sample standard deviation...
Q: help,
A: p^=xn
Q: Express the confidence interval 0.444 <p<0.888 in the form ptE. p1E =
A: Confidence Interval: Confidence interval is the interval estimate of the population parameter. It i...
Q: Do the following sets of data and interpret your results:1. Relationship between students performanc...
A: It is very useful in statistics. It has wide applications in all statistical procedures.
Q: The average amount of time it takes for couples to further communicate with each other after their f...
A: Given information- Population mean, μ = 2.68 days Sample size, n = 40 Sample mean, x-bar = 2.5 days ...
Q: Q3. Vestel wants to compare the proportion of defective dishwashers produced at two differentshifts....
A: p1 = 4/50 = 0.08p2 = 6/40 =0.15 z-critical value at alpha(0.1) = 1.645
Q: Statistics Question
A:
Q: Prior to assessment of the outcome, the researchers did a manipulation check. Members of Groups 1 an...
A: Q1)The calculate F-statistic = 184.29Critical f-value at df(1,108) = 3.929Excel formula used: "=F.IN...
Q: describe the difference between a one-sample t-test, a two-sample (independent-samples) t-test, a re...
A: One sample t: One sample t test is used for comparing the population mean to particular constant val...
Q: Write the normal probability for the shaded region of the graph and find its value. Select the corre...
A: From the given graph, n=16 p=0.55 By using the normal approximation method, X~Nnp, np1-pX~N16×0....
Please show work thank you
The p-value of a test of H0: μ1≤μ2 versus Ha: μ1>μ2 is 0.04711. Determine the p-value of the test if the alternative was Ha: μ1≠μ2 instead.
- 0.9529
- 0.0942
- 0.9058
- 0.0471
- 0.0236
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- Average Traffic Spacing The headway h is the average time between vehicles. On a highway carrying an average of 500 vehicles per flour, the probability P that the headway is at least t seconds is given by P=0.87t. a. What is the limiting value of P? Explain what this means in practical terms. b. The headway h can be calculated as the quotient of the spacing f, in feet, which is the average distance between vehicles, and the average speed v, in feet per second, of traffic. Thus, the probability that spacing is at least f feet is the same as the probability that the headway is at least f/v seconds. Use function composition to find a formula for the probability Q that the spacing is at least f feet. Note: Your formula will involve both f and v. c. If the average speed is 88 feet per second 60 miles per hour, what is the probability that the spacing between two vehicles is at least 40 feet?Ten determinations of the percentage of water in a certain solution yielded X¯ =0.453% and S = 0.37%. If μ is the “true” percentage of water in the solution,assuming normality, test at the 5% level of significance the hypothesis H0: μ =0.5 versus H1: μ < 0.5.9.Life on Other Planets Forty-seven percent of people believe that there is life on other planets in the universe. A scientist does not agree with this finding. He surveyed 100 randomly selected individuals and found 40 believed that there is life on other planets. At α=0.01, is there sufficient evidence to conclude that the percentage differs from 47%? Use the critical value method with tables. a) Find the critical value(s).= b) Compute the test value. z=
- A new cream that advertises that it can reduce wrinkles and improve skin was subject to a recent study. A sample of 60 women over the age of 50 used the new cream for 6 months. Of those 60 women, 50 of them reported skin improvement(as judged by a dermatologist). Is this evidence that the cream will improve the skin of more than 40% of women over the age of 50? Test using α=0.05 test statistics z=? rejection region z>? The final conclustion is A. We can reject the null hypothesis that p=0.4 and accept that p>0.4 That is, the cream can improve the skin of more than 40% of women over 50.B. There is not sufficient evidence to reject the null hypothesis that p=0.4 That is, there is not sufficient evidence to reject that the cream can improve the skin of more than 40% of women over 50.The average 1-year-old girl is 25 inches tall. A random sample of 40 one-year-old-girls in a large day care franchise had an average height of 25.5 inches. At a=0.05, can it be concluded that the average height differs from 25 inches? Assume ?=1.96. The alternative hypothesis? Critical Value? Computed Test Value? The decision? Evidence?The average yield of soybeans in Ohio is 58 bu/Acre (the control mean). We wish to test whether a field that has been treated with the product has soybean yields that are different than 58 bu/acre. We are going to conduct a study with 49 fields and set up the hypothesis at α=.05. After we conduct the experiment we get a sample mean x = 60 bu/Acre and s=7 bu/acre. Conduct the test. Z=____________
- A test of the claim that the proportion of students taking more than 9 units is more than 42% produces the test statistic z = 1.76. Find the P-value.Workers in the office like to drink coffee during work. A doctor is concerned about this situation since the too much coffee consumption may result to long-term health problems. However, studies suggests that there is no risk in drinking three cups of coffee per day, which is about 250 mg of caffeine. The doctor wants to know if the amount of caffeine consumed by the workers is within tolerable limits. He randomly selected 20 students and found that they consume an average of 270 mg of caffeine each day with a standard deviation of 48 mg. Assume that the daily amount of caffeine consumed by students follow the normal distribution.1. Which of the following sets of hypotheses should be used in this study? A. Ho: μ = 250 vs. Ha: μ > 250 B. Ho: μ ≤ 250 vs. Ha: μ > 250 C. Ho: μ = 270 vs. Ha: μ > 270 D. Ho: μ = 270 vs. Ha: μ ≠ 270 2. Which of the following is(are) TRUE? I. The appropriate test procedure to answer the objective of the study is a…Right tail test with t-calc = 1.75 and degrees of freedom = 39. p-value of the test is: 0.005 < p-value < 0.01 0.05 < p-value < 0.1 0.01 < p-value < 0.025 0.025 < p-value < 0.05
- You measured 0.0899 ± .0008 µg/mL, also with 7 samples [0.092, 0.089, 0.097, 0.808, 0.091, 0.082, 0.095] ± 0.002 µg/mL. Use a t-test to determine if levels have changed with 95% certainty. Note: for equal size samples with equal uncertainties, you may use the following formula, where n is the number of samples in one week’s data set. The degrees of freedom in this case are 2n-2. You can look up a t-table.Identify the type I error and the type II error that correspond to the given hypothesis. The percentage of adults who have a job is less than 88%. dentify the type I error. Choose the correct answer below. A. Fail to reject the null hypothesis that the percentage of adults who have a job is less than 88% when the percentage is actually equal to 88%. B. Reject the null hypothesis that the percentage of adults who have am jobm is equal to 88% when that percentage is actually equal to 88%. C. Fail to reject the null hypothesis that the percentage of adults who have a job is equal to 88% when that percentage is actually less than 88%. D. Reject the null hypothesis that the percentage of adults who have a job is less than 88% when that percentage is actually less than 88%. Identify the type II error. Choose the correct answer below. A. Reject the null hypothesis that the percentage of adults who have a job is less than 88% when that percentage is actually less…It describes the respiratory rate in males and females. A person's respiratory rate is the number of breaths you take per minute. The normal respiration rate for an adult at rest is 12 to 20 breaths per minute. Compare females and males with independent sample t-test and make a conclusion whether these two groups are different. IMPORTANT: In your response, write null hypothesis and alternative hypothesis; your chosen a-level; p-level for calculated t-test; your decision on whether you reject null hypothesis. Respiratory rate Sex 17.0703018 Male 18.2032498 Female 14.3917256 Male 15.308542 Male 16.4169986 Male 16.0864952 Female 14.0741786 Female 15.8170238 Female 16.899573 Male 12.191781 Male 9.8614928 Male 8.8927154 Male 19.37463325 Female 19.2888126 Female 14.1377044 Female 17.8751306 Female 17.4282968 Male 13.920652 Female 16.8086394 Female 19.8796358…
