QUESTION 22 Họ: uS 20 H u> 20 D=36 x=24.6 S= 12 If the test is done at 95% confidence, the null hypothesis should 64ot be rejected Oberejected OC Not enough information is given to answer this question O None of these altematives is correct.
Q: What should be the tickets in the box model?
A: Here use given criteria for box model
Q: A scientist claims that pneumonia causes weight loss in mice. The table shows the weights (in grams)...
A: Given The data is as follows: Mouse Weight (before) Weight (after) 1 22.7 21.3 2 21.6 20.9 ...
Q: Value of X -4 -2 3 4 P(X = x) 0.25 0.55 0.15 0.05 Which of the following statements is true about th...
A:
Q: (a) Identify the claim and state Ho and H The claim is "The therapy the length of time patients suff...
A: Here given claim soft tissue therapy helps to reduce the length of time patients suffer from heada...
Q: An engineer at a company wants to model the relationship between the yield (y) and three variables: ...
A: From the given output From appropriate statistical tests, determine the relationship between yield ...
Q: gambling game is set up so that the chance of winning is only 3%, but the payout is big: you can win...
A: Given that n=500 , p=3%=0.03 , q=1-p=1-0.03=0.97
Q: Your professor wishes to estimate the proportion of ALL high school students enrolled in college-lev...
A:
Q: Suppose a gambler plays roulette 400 times, betting $1 on each play on red. Recall from the previous...
A:
Q: Bits are transmitted through a digital transmission. channel. the probability of receiving these tra...
A: Solution: Let X be the number of bits received in error in the next 6 bits transmitted. The possible...
Q: Find the following measures of dispersion using the following lists of average monthly temperatures ...
A: Data for two groups is given. We have to check which data set has more variability according to ques...
Q: A comparison between species: Biologists wish to compare the prevalence of a genetic mutation across...
A: For the given data Perform z test for two proportion
Q: Jen has a home she plans to rent out she hires a management company that charges 10.3% of the rental...
A: Given Management company charges 10.3% of the rental price Per month rent is $1980 a month
Q: a. Average quantity in the juice bottles: O ml b. Standard deviation in volume of the sample: O mL
A:
Q: Show that normal distribution is a limiting form of Poisson distribution.
A:
Q: The following table shows the number of fifth and sixth grade teachers in a school district and the ...
A: Given The table of 5th and 6th grade number of teachers and number of student in each grade Find a a...
Q: Part 4 of 5 (d) Would it be unusual if the sample mean were greater than $2742? Round answer to at l...
A: Given that. X~N( μ , ?^2 ) μ=2681 , ?=510 ,n=112 Z-score =( x - μ )/?
Q: An epidemiologist is worried about the prevalence of the flu in East Vancouver and the potential sho...
A: It is given that n=336 and x=38.
Q: Find the critical t-value that corresponds to a 99% confidence level with a sample size of 12. Your ...
A:
Q: Q. 1 (i) Find moment generating functions (mgf) of the following probability distributions. (ii) Usi...
A: Note: Hi, thank you for the question. As per our company guideline we are supposed to answer only fi...
Q: 5) Estimate the mean and standard deviation of the underlying normal distribution from which the fol...
A: Normal Probability Plot: A normal probability plot is a graphical technique for checking whether or ...
Q: 8. People arrive at a farmer's market according to a Poisson process at rate 20 per hour. Suppose am...
A:
Q: The arm span and foot length were measured (in centimeters) for each of the 19 students in a statist...
A: The objective is to find out the predicted foot length for a student with an arm span of 160cm.
Q: Did the population grow at a faster or slower pace for the normal growth curve than in the new growt...
A: Given The graph is as follows:
Q: humber of spots showing is five. Follow that method to give a probability model for the total number...
A: Here use X = sum of spot on dice
Q: 30. It is the distribution used to estimate the population parameters for small sample size and when...
A:
Q: A social worker wishes to test the claim that, in his state, 11% of the homeless population is made ...
A:
Q: The amount of annual snowfall in a certain mountain range is normally distributed with a mean of 75 ...
A:
Q: 10. You want to know the effects of the COVID-19 to the Filipino people and you will ask the medical...
A: here use basic of sampling method
Q: 2. A randomized study compares two surgical treatments for the same condition, and sees how many yea...
A:
Q: In the year 2000, the average car had a fuel economy of 22.74 MPG. You are curious as to whether thi...
A: Given that Population mean μ =22.74 Level of significance =0.05 P-value =0.6901
Q: The case fatality rate (percent dying of disease once diagnosed) for Ebola virus disease (EVD) varie...
A: The objective is to find out the expected number of people to die from EVD in this sample, the prob...
Q: Find the critical value z/ needed to construct a confidence interval with level 85% Round the answer...
A:
Q: A university scholarship committee must select two students to receive a scholarship for the next ac...
A: Solution-: Given: Number of students in state=6, Number of students out of state =4 Let, X- be the n...
Q: Note: I am only given one attempt at this. I believe my answer is wrong; please help!! A medical re...
A:
Q: random sample of 150 adults was given an IQ test. It was found that 72 of them scored higher than ...
A:
Q: Find the moment generating function of normal distribution and obtain the first four moments about m...
A:
Q: 1. What do you call the set of all data that researchers want to investigate? C. random D. sample 2....
A: Here use basics of population and sample
Q: On the gameshow The Price is Right there is game called "More or Less" the contestant is shown a wrö...
A: We have given that the probability distribution table of random variable X that is number of prizes ...
Q: Area of Ope Which of the following is the equation of the line of best fit? O A. y = -r + 160 %3D
A:
Q: 1. The value of E (x\y) is
A:
Q: What is the null distribution of the test statistic? How do we know if it is normal or not, and how ...
A: Points on the sampling distribution of the sample mean: If the true population distribution of a ra...
Q: (a) (b) 11800 12000 12200 11600 12000 12400 (c) (d) 800 1000 1200 1400 1600 600 1000 1400 1800 0.2
A: The objective is to define the plot that roughly explains the distribution for 1000 draws.
Q: Test the following null hypotheses using a significance level of .05. µ = 10; x-bar = 10.1; s = .3;...
A:
Q: 3.6.9. Let F have an F-distribution with parameters ri and r2. Argue that 1/F has an F-distribution ...
A: Solution
Q: Find the critical value(s) and rejection region(s) for the indicated t-test, level of significanc...
A: Given , It is left tailed t test . i.e. one tailed t test Significance level = α=0.005 Sample size =...
Q: Ilustration 16.42. An urn contains 4 white and 6 black balls and another urn contains 8 white and 9 ...
A:
Q: Write the important properties (characteristics) of normal distribution and normal probability curve...
A:
Q: The weight (in pounds) and height (in inches) for a child were measured every few months over a two-...
A: Step-by-step procedure to obtain the regression equation using Excel is as follows: Enter the varia...
Q: Q9. Using the diagram below Deviation from mean of Y TSS Error→ ESS Explained by regression→ RSS Mea...
A: We have given the statement about the regression line.
Q: A university is planning to teach classes via distance-educatior technical assistant who can help fa...
A: Poisson Distribution: The random variable X that equals the number of counts in the interval is a Po...
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
- Question 3 A humane society claims that less than 61% of households in a certain country own a pet. In a random sample of 500 households in that country, 285 say they own a pet. At α=0.05, is there enough evidence to support the society's claim? Complete parts (a) through (c) below. (a) Identify the claim and state H0 and Ha. (b) Identify the standardized test statistic first then use technology to find the P-value. (c) Decide whether to reject or fail to reject the null hypothesis and (d) interpret the decision in the context of the original claim.R/ Question 3 A humane society claims that less than 70% of households in a certain country own a pet. In a random sample of 400 households in that country, 268 say they own a pet. At α=0.10 is there enough evidence to support the society's claim? Complete parts (a) through (c) below. (a) Identify the claim and state H0 and Ha. (b) Identify the standardized test statistic first then use technology to find the P-value. (c) Decide whether to reject or fail to reject the null hypothesis and (d) interpret the decision in the context of the original claim.A supplier claims that the true mean electrical resistance of wiring harnesses of a certain model is 30 ohms. A manufacturer that uses this harness wants to test whether this claim is true. Which of the following is the correct pair of hypotheses to use for this hypothesis test? Pick the right answer below by quoting the numbered point. 1. H0:μ=30 and H1:μ≠30 2. H0:μ⩾30 and H1:μ<30 3. H0:μ⩽30 and H1:μ>30 4. H0:μ≠30 and H1:μ=30 5. H0:μ<30 and H1:μ⩾30 6. H0:μ>30 and H1:μ⩽30
- Question 5For each of the following tobs values, determine the highest level of significance associated with the decision taken. *NB:* Please show working tobs df Decision (i) 4.000 17 Reject Ha for a two-tailed test (ii) 1.200 120 Reject Ha for a one-tailed test (iii) -2.660 16 Reject Ha for both one-tailed and two-tailed test (iv) -1.586 60 Reject Ha for a one-tailed testQuestion 18 According to a University Center for Logistics Management, 8% of all merchandise sold in the United States gets returned. A Seattle department store sampled 90 items sold in January and found that 10 of the items were returned.If you have the following null and alternative hypotheses for a test you are running:H0:p=0.08Ha:p>0.08Calculate the test statistic, rounded to 3 decimal places Z=question 25 Nationally, patients who go to the emergency room wait an average of 5 hours to be admitted into the hospital. Do patients at rural hospitals have a lower waiting time? The 10 randomly selected patients who went to the emergency room at rural hospitals waited an average of 3.8 hours to be admitted into the hospital. The standard deviation for these 10 patients was 2 hours. The p-value is <OR > α? Based on this, we should reject or fail to reject the null hypothesis.? Thus, the final conclusion is that ...(choose 1 correct answer ) The data suggest that the population mean awaiting time to be admitted into the hospital from the emergency room for patients at rural hospitals is not significantly lower than 5 hours at αα = 0.01, so there is statistically insignificant evidence to conclude that the population mean waiting time to be admitted into the hospital from the emergency room for patients at rural hospitals is lower than 5 hours. The data suggest the…
- 10/17 The P value is_. Round to three decimal places as needed. should we reject or do not reject the null hypothesis?Question 7 out of 9. Using these data below, what is the t statistic for a single-sample t test (null hypothesis is that μ = 0)? Y -1.48 -0.95 2.04 -0.42 2.36 -0.40 1.06 0.60The recommended daily dietary allowance for zinc among males older than age 50 years is 15 mg/day. An article reports the following summary data on intake for a sample of males age 65−74 years: n = 111, x = 12.4, and s = 6.69. Does this data indicate that average daily zinc intake in the population of all males age 65−74 falls below the recommended allowance? (Use ? = 0.05.)State the appropriate null and alternative hypotheses. H0: ? = 15Ha: ? > 15H0: ? = 15Ha: ? < 15 H0: ? = 15Ha: ? ≤ 15H0: ? = 15Ha: ? ≠ 15 Calculate the test statistic and determine the P-value. (Round your test statistic to two decimal places and your P-value to four decimal places.) z = P-value = State the conclusion in the problem context. Do not reject the null hypothesis. There is sufficient evidence that average daily zinc intake falls below 15 mg/day.Reject the null hypothesis. There is sufficient evidence that average daily zinc intake falls below 15 mg/day. Do not reject the null…
- The manufacturer of Lakas Papaya cleansing soap claimed that their product was effective in making the facial skin blemish-free of at least 93% of users who tested it for a period of 1 week. In a sample of 350 people who had problems with their facial skin, the soap provided blemish-free skin for 295 people. Which of the following represents the alternative hypothesis for this problem? A. Ha: p = 0.93B. Ha: p < 0.93C. Ha: p > 0.93D. H_a: p ≠ 0.93Which of the following statements is true if when using null hypothesis testing, our p value (in the "sig" column of SPSS output) is 0.051? Reject the null hypothesis Fail to reject the null hypothesis Reject the alternative hypothesis Fail to reject the alternative hypothesisDo question 7,8 and 9 only The new study also carried out a test to determine whether the population proportion of unvaccinated school children contracting winter flu was higher than the population proportion of vaccinated school children. The Z test statistic to test this belief is found to be 1.874. The corresponding p-value is 0.0305 0.1212 0.3036 0.7724 Question 7 Suppose that the new study uses a level of significance of 0.05 to test the claim in Question 6. The probability of Type I error is 0.025 0.05 0.95 0.975 Question 8 Based on previous studies of school children who were vaccinated and contracted the flu, the time in hours that the flu symptoms last is assumed to follow a normal distribution with a mean of 20.7 hours and a standard deviation of 7.3 hours. The probability that a randomly selected school child has flu symptoms for more than 24 hours is 0.1628 0.3256 0.6744 0.8372 Question 9 Suppose that a random sample of 5 vaccinated school children is taken. Assuming the…