22 QUESTION 22"A psychotherapist investigating whether clients revealed more information while sitting in an easy chair or when lying down on a couh, so sherandomly assignd 15 clients to each condition. The third session for each client was videotaped, and an independent observer counted the client?sdisclosures and the two groups were then compared. They find that clients who sit reveal an average of 3.04 disclosures, a sample variance =8.92. While the clients who lay down share an average of 4.46 disclosures, with a sample variance = 9.05. would be the test statistic thepsychotherapist would observe given this data? (Be sure to round your responsewithWhatto the seconddecimalplace). "

We have given information, For clients who sit reveal, n1=15, x¯1=3.04 and s12= 8.92 For clients…

Answered: QUESTION 22 "A psychotherapist…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question 19 A manufacture makes light-weight sneakers, and claim that the average weight of one sneaker is no bigger than 2 pounds. To verify this claim, a sample of 9 sneakers are weighed, and the sample mean is 2.4 pounds with the sample variance of 0.25 pounds^2. Assuming the weights of sneakers are normally distributed, we would like to test the claim of the manufacture at 10% level of significance. Please select the correct statement from below:
Question 1In 2002, the average duration of incoming telephone calls to a furniture store was 9.4minutes. The manager wants to perform a test to determine whether this average durationof incoming calls has changed. Twenty calls to the store was randomly selected and themean duration was 10.2 minutes with standard deviation 4.8 minutes. Assuming that theduration of incoming telephone calls to a furniture store is normally distributed,a) Using a 1% level of significance, test whether the mean duration of incoming calls tothe store had changed. b) Construct the 95% confidence interval for the population mean duration of theincoming calls to the furniture store.
QUESTION 1 A health researcher read that a 150-pound college-aged, male can burn an average of 530 calories per hour playing tennis with a standard deviation of 25 calories. 40 college-aged males were randomly selected at a commuter school and the mean number of calories burned per hour playing tennis was 540 calories. Do college-aged male tennis players at the commuter school burn more calories per hour than the college-aged, male tennis player population? Test with a 0.05 significance level. What are the hypotheses? Null and Alternate
QUESTION 7 A number of 28 university students who smokes completed a questionnaire inquiring their smokinghistory and behavior. The result shows that the average smoking initiation age of this group is 21.6years with a variance of 18.49. Based on past record, the smoking initiation age of universitystudent has a mean of 20.74 years with a standard deviation of 5.1 years. Conduct a necessaryanalysis to determine if the smoking initiation age remain the same as the previous record. Use 4%level of significance.
What is the sample correlation coefficient for these data? Carry your intermediate computations to at least four decimal places and round your answer to at least three decimal places.
QUESTION 4 Titus Company, a recycling computer company ordered computer components from two differentsuppliers, namely Supplier A and Supplier B. Since Covid-19 outbreak in Malaysia, the companyhas financial constraint and need to identify which supplier has more reliable component. Duringassembly process, the number of defective components is recorded. The number of defectivecomponents for each supplier from 12 random days in a month is given in Table 3. Assume thatthe data are normally distributed and the two population standard deviations are not equal.Table 3Day 1 2 3 4 5 6 7 8 9 10 11 12Supplier A 34 36 40 39 30 38 37 39 35 41 40 38Supplier B 40 40 38 39 37 35 42 41 40 41 33 39(i) Construct a 90% confidence interval for the difference in the true average number of defectivecomponents between both suppliers.(ii) Interpret the parameter estimate obtained in (i)?(iii) What is the effect on…
Question 02 There is a claim that drink driving has been very common in high ways. The Highway Police randomly caught 300 drivers for breath alcohol test and found that 14% of drivers have breath alcohol over the legal limit. At 4% level of significance, use the p-value approach to test the hypothesis that the percentage of drivers who are drink driving is more than 10%.
Table 2 on page 603 is based on paired-samples t tests, a technique that we do not cover in this course. However, based on the p-values listed in the second to last column of the table, state three measures that showed a statistically significant change over 24 months for mothers and children in the MST-BSF group. Indicate whether the change was an increase or a decrease, and whether the change was in the mother or the child.?

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