what is the test statistic? what is the p value?
Q: . National income from manufacturing industries is to be estimated for 1999 from a sample of 6 of…
A: Note : As per the guidelines, we will solve first three sub-parts . To get remaining sub-part…
Q: F6. Suppose that 25 percent of women and 22 percent of men would answer yes to a particular…
A:
Q: brazil spends 6.24% of its GDP on education, calculate the z-score for brazil. miu = 4.8% and the…
A: It is given that Mean = 4.8 SD = 1.66 And value X = 6.24
Q: classify the 2 given samples as independent or dependent sample 1: the gas mileage for 31 trucks…
A: In this case, we need to identify the 2 samples are independent or dependent.
Q: Oliver queen is able to hit the bull’s-eye 72% of the time if he shoots 24 arrows what is the…
A:
Q: ou are the operations manager for an airline and you are considering a higher fare level for…
A: Given data, z-value at 95% confidence is Zc=1.96 Margin of error E=4.5% =0.045
Q: An urn contains 5 red balls and 5 blue balls. Each ball is numbered: 1 to 5. Two balls are drawn.…
A: Probability The chances or likelihood of happening an event is referred to as probability. The…
Q: The comparisons of Scholastic Aptitude Test (SAT) scores based on the highest level of education…
A: There are two independent samples which are college and high school. We have to test whether the…
Q: It is believed that 12% of Americans use a traditional antenna to watch network television. How…
A: Given that Population proportion p=12%=0.12 Margin of error =E =2%=0.02
Q: Part c) You are going to cut down a large tree and do not want to break off from the job to recharge…
A:
Q: Ho : 830 Hị : µ # 830 25, Suppose that you also know that for n = * = 891.92 and s = 150. Take a =…
A:
Q: In testing samples of regular Tylenol pills to verify that they have close to the desired amount of…
A:
Q: Suppose a single fair die is rolled. Find the probability that it is a 3, given that it is an even…
A:
Q: The table shows the annual compensation of 40 randomly chosen CEOs (millions of dollars). 4.93…
A: (b)From the plotted histogram with the help of minitab we get the data is highly right skewed.…
Q: A stemplot is created from the ages of drunk drivers involved in fatal car crashes and the first row…
A: Given that Stem leaf plot Stem | leaf 1 | 6 7 8 8 8 9
Q: Express the confidence interval 88.5%±8.1%88.5%±8.1% in interval form. Express the answer in…
A: Given that
Q: coach wanted to know if aspiring junior tennis players are practicing more than 142 minutes each…
A:
Q: 9) For a certain type of computer, the length of time between charges of the battery is normally…
A:
Q: A company is developing a new high performance wax for cross country ski racing. In order to justify…
A:
Q: Scott analyzed language proficiency scores for students who were learning Chinese. Students were…
A:
Q: Suppose that textbook weights are normally distributed. You measure 22 textbooks' weights, and find…
A:
Q: Suppose that the joint CDF of the random variables X and Y is given by: 0, x < -2 or y < -5
A: From the given information, The joint CDF of X and Y is, Consider, the joint pdf of X and Y is,…
Q: Coffee Price Gasoline Price 2$ Month Ib gal Jan. 4.58 3.93 Feb. 4.16 3.65 Mar. 5.72 3.27 Apr. May…
A: The Monthly price is given Coffee Price Gasoline Price 4.58 3.93 4.16 3.65 5.72 3.27…
Q: A study claims that over 25% of those who suffer from osteoarthritis receive measurable relief from…
A: Solution-: Given: n=8 We shall not reject the null hypothesis is We want to evaluate (a) α,…
Q: In a box there are a total of four prizes two of them are worth $3 a single price worth $14 and a…
A: The box contains 4 prizes where 2 of them are worth $3, 1 prize worth $14 and 1 prize worth $198.…
Q: was not getting the correct p-value I tried many time can you please me the to find the p- value in…
A: According to the given information in this question we need to find the p value
Q: Stoaches are fictional creatures distantly related to bigfoot and yeti. Stoach weights are normally…
A: From the provided information, Mean (µ) = 1587 g Standard deviation (σ) = 480 g X~N (1587, 480) Here…
Q: 2. To compare two production lots of aspirin tablets, you collect samples from each and analyze…
A: In hypothesis testing, of means and variances the underlying assumption is the population…
Q: calculate the test statistic
A: here given table for calculate chi-square test statistic
Q: Find the Mean In a normal distribution, find μ when σ is 8 and 7.35% of the area lies to the left of…
A: Given,standard deviation(σ)=8
Q: You intend to conduct a test of independence for a contingency table with 6 categories in the column…
A:
Q: An experiment produces the data sample: 285, 279, 280, 288, 279, 286, 284, 279 whosex…
A:
Q: The recommended daily dietary allowance for zinc among males older than age 50 years is 15 mg/day.…
A: Givensample size(n)=119Mean(x)=12.9standard deviation(s)=6.61α=0.05
Q: Teachers’ Salaries in North Dakota The average teacher's salary in North Dakota is $35,441. Assume a…
A: Let , the random variable X be the teacher's salary in North Dakota The random variable X follows…
Q: 1. O P(X=4) = 0,0512 2. O P(X=4) = 0,0579 3. O Lainnya/other 4. O P(X=4) = 0,0067
A: Given that Number of trials n=5 Success of probability p =0.20 X~binomial (n, p)
Q: A survey of 455 workers showed that 160 said it was unethical to monitor employee e-mail. When 100…
A:
Q: 8. On the day before an election in a large city, each person in a random sample of 1,000 likely…
A: Confidence Interval: Confidence interval is the interval estimate of the population parameter. It…
Q: A. Complete the table by converting the given values into z-scores. Then find the corresponding area…
A:
Q: The frequency distribution which is visualized in the form of an overlapping bar graph is also known…
A: We have given that the statement about to the graph. Here, need to find out the correct frequency…
Q: Suppose that the joint CDF of the random variables X and Y is given by: 0, x < -2 or y < -5
A: Given that Consider, the density function,
Q: 9. The caffeine content of 8-ounce cans of a certain cola drink is approximately normally…
A:
Q: Ten students who are taking “on site class" have their body temperature measured, the results are as…
A: Introduction: We need to identify the correct stem and leaf plot.
Q: A researcher has found that the number of defective parts produced for a given process follows a…
A:
Q: Poisson distribution is applied for ___________
A: Here use basic of poission distribution
Q: What are some tips or things to keep in mind for least squares regression line?
A: The least square regression model is a statistical procedure in regression analysis.
Q: Price of Gasoline The average retail price of gasoline (all types) for the first half of 2005 was…
A: Consider that the mean and standard deviation of a random variable X are µ and σ, respectively.…
Q: (60 °C, 70 °C, and 80 °C) using an oven. Samples checking, there were varying sizes of chilli and…
A: Sizes of Capsaicin red habanero chilli are different Temperatures 60 70 80 Sources…
Q: A shop sells a particular make of video recorder. Assuming that the weekly demand for the video…
A:
Q: If a coin is tossed and A is the event that Head appears and B is the event that Tail appears. So…
A:
Q: A marketing research firm presented an advertisement for a product to random samples of potential…
A: Solution-: We find the test of problem, degree of freedom, test statistic and p-value by using…
Do consumers spend more on a trip to Store A or Store B? Suppose researchers interested in this question collected a systematic sample from
Store A customers and Store B customers by asking customers for their purchase amount as they left the stores. The data collected is summarized by the accompanying table. Suppose researchers decide to test the hypothesis that the means are equal. The degrees of freedom formula gives 162.75 df. Test the null hypothesis at α=0.10.
store a store b
n 83 82
y 42 55
s 20 19
what is the test statistic?
what is the p value?
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- a researcher conducts a hypothesis test using a sample from an unknown population. if the t statistic has df= 35, how many individuals were in the sample?1. A researcher reports an F-ratio with df(between) = 3 and df(within) = 28. How many treatment conditions were compared in the experiment? If samples have an equal number of participants, how many are in each treatment? 2. A researcher obtains an F = 4.10 with df = 2, 14. Is this value sufficient to reject the null with α = .05? Is it sufficient enough to reject the null with α = .01?Dr. Chapman conducted an experiment in which participants watched paint dry for 30 minutes twice, once being paid $1 and once being paid $30. When comparing the samples, he calculated t = 3.57. He assumed α = .01 with df = 5, so the tcv = ±4.032. Because the calculated value was: A. greater than the critical value, Dr. Chapman can reject the null hypothesis. B. greater than the critical value, Dr. Chapman failed to reject the null hypothesis. C. less than the critical value, Dr. Chapman failed to reject the null hypothesis. D. less than the critical value, Dr. Chapman can reject the null hypothesis.
- p 15 Is sunscreen with an SPF 30 rating more effective at preventing sunburn than sunscreen with an SPF 15 rating? At the alpha = 0.05 level of significance, test the claim that SPF 30 sunscreen is better at preventing sunburn than 15 sunscreen. Let represent the proportion of SPF 15 sunscreen wearers who get a sunburn and represent the proportion of SPF 30 sunscreen wearers who get a sunburn. (Round your results to three decimal places) 1. Which would be correct hypotheses for this test? O O H 0 :p 15 =p 30 , H 1 :p 15 ne p 30 H 0 :p 15 =p 30 , H H 1 :p 15 <p 30 O H 0 :p 15 <p 30 ,H 1 :p 15 >p 30 O H 0 :p 15 =p 30 H 1 :p 15 >p 30 A random sample of 250 beach-goers were given SPF 15 sunscreen and asked to lay in the sun for 1 hour10 of them later reported a sunburn. Another random sample of 250 beach- goers were given SPF 30 sunscreen and asked to lay in the sun for 1 hour. 7 of them later reported a sunburn. 2.Find the test statistic 3. Give the P-value: answer only…A sample of n = 16 scores produces a t statistic of t = 2.00. If the sample is used to measure effect size with r2, what value will be obtained for r2?A regression on the original regressors, ?̂t2 and a constant term yields the following statistics: R2 = 0.296041 F = 1.177507 coeff of ?̂t2 has a t-statistic of 2.876 With this information, which test can you implement to deal with the problem omitted variables and why? Implement the test as stated in b(i) and interpret the results. What is (are) the consequence(s) of the problem alluded to above on the estimators?
- A question of medical interest is whether jogging leads to a reduction in systolic blood pressure. To learn about this question, eight non-jogging volunteers have agreed to begin a 1-month jogging program. At the end of the month, their blood pressures were determined and compared with earlier values. The data are presented in the Table 1. a. The appropriate hypotheses are: H0 :μ1−μ2 =0 versus Ha :μ1−μ2 /= (does not equal) 0 H0 :μ1−μ2 =0 versus Ha :μ1−μ2 <0 H0 :μ1−μ2 =0 versus Ha :μ1−μ2 >0 b. The value of test statistic is 1. 0.577 2. −0.577 3. 0.237 4. -0.237 c. The p−value of test is 1. 0.816 2. 0.408 3. 0.582 4. 0.291 d. At the significance level calculated in part (c), we conclude that jogging i. Leads to reduction in systolic blood pressureii. Does not lead to reduction in systolic blood pressureA researcher is testing the effect of marijuana use on reaction time. A sample of n = 9 students is obtained and each student is given a dose of marijuana. Thirty minutes later, each student's reaction time is measured in a driving simulator. The scores for the sample of students averaged M = 211 milliseconds with SS = 1152. Assuming that reaction time for students in the regular population averages μ = 200 milliseconds, are the data sufficient to conclude that the medication has a significant effect on reaction time? Test at the .05 level of significance. Which of the four options below is the best answer? Type the letter “A” or “B” etc. in the box Option A. Accept the null, marijuana has no effect on reaction time Option B. Accept the null, marijuana does affect reaction time Option C. Reject the null, marijuana has no effect on reaction time Option D. Reject the null, marijuana does affect reaction time Compute r 2, the percentage of variance explained by the treatment effect.…Do consumers spend more on a trip to Store A or Store B? Suppose researchers interested in this question collected a systematic sample from 83 Store A customers and 81 Store B customers by asking customers for their purchase amount as they left the stores. The data collected is summarized by the accompanying table. Suppose researchers decide to test the hypothesis that the means are equal. The degrees of freedom formula gives 159.36 df. Test the null hypothesis at α=0.05. Store A Store B n 83 81 y 44 54 s 21 18 Identify the null and alternative hypotheses. Choose the correct answer below. A. H0: μA−μB≠0 HA: μA−μB=0 B. H0: μA−μB=0 HA: μA−μB≠0 C. H0: μA−μB=0 HA: μA−μB>0 D. H0: μA−μB=0 HA: μA−μB<0 Compute the test statistic. t=nothing (Round to two decimal places as needed.) Find the P-value. The P-value is nothing. (Round to three decimal places as needed.)…
- You conduct a regression of the squared residuals against the dummy variables X1, X2, and X3 and find that for the squared residuals regression: Multiple R 0.4145 R Square 0.1718 Adjusted R Square 0.1600 SEE 92.3760 Conduct a test at the level to see if conditional heteroskedasticity is present In view of your answer for a), what needs to be done?The time X of a radioactive isotope decays with an expected value of 10 years, and is modeled as an exponential random variable. a) What is the parameter λ of the exponential RV X? b) Compute P(X < 10).Data from the 2014 General Social Survey (GSS) show that out of n=1,606 adult respondents, the proportion who reported having voted for Barack Obama in the 2008 presidential election was 0.61 Q: If I calculate a z test static of 4.84, and my alpha = 0.05, what decision should I make about the hypothesis? (Calculate the p-value for a 2-sided test to make your decision.) Options: A: fail to reject the null hypothesis that the proportion of American adults who voted for Obama in 2008 was 0.55 B: reject the null hypothesis that the proportion of American adults who voted for Obama in 2008 was 0.55 C: Reject the alternative hypothesis that the proportion of American Adults who voted for Obama in 2008 was not equal to 0.55 D: Fail to reject the alternative hypothesis that the proportion of American adults who voted for Obama in 2008 was not equal to 0.55