Answered: In a test of h0 u=100 against ha :u>100…

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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Use the pulse rates in beats per minute (bpm) of a random sample of adult females listed in the data set available below to test the claim that the mean is less than 69bpm. Use a 0.05 significance level. Determine the p-value, test statistic, and whether to reject or support the null hypothesis. Pulse Rates (bpm)4758945542428462993656838640967652866179101964387103596043524566974010140833853398649613552933856446594
A bank manager wants the average time that a customer waits in line to be at most 3 minutes. Customers at the bank have complained about the long wait times. To test whether the average wait time at the bank is greater than 3 minutes, 60 customers were randomly selected as they entered the bank and their wait times were recorded. The mean wait time was 4.7 minutes. A one-sample t-test resulted in a p-value of 0.00031. Which of the following is an appropriate interpretation of the p-value? The probability that the population mean wait time is greater than 3 A minutes is 0.00031. The probability that the sample mean wait time is greater than 3 minutes is В 0.00031. If the population mean wait time is greater than 3 minutes, the probability of observing a sample mean wait time of 4.7 minutes or more is 0.00031. If the population mean wait time is 3 minutes, the probability of observing a sample mean wait time of 4.7 minutes is 0.00031. If the population mean wait time is 3 minutes, the…
Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 34 of the 39 subjects treated with echinacea developed rhinovirus infections. In a placebo group, 98 of the 115 subjects developed rhinovirus infections. Use a 0.05 significance level to test the claim that echinacea has an effect on rhinovirus infections. Complete parts (a) through (c) below. Identify the test statistic:Z= ___?____ Identify the P-Value: _______State the conclusion about the null hypothesis, as well as the final conclusion that addresses the original claim. _________Identify the confidence interval limits for the appropriate confidence interval.__?____ < P1-P2 < __?____
5- Level refers to a categorical quantity under examination in an experiment as a possible cause of variation in the response variable. Select one: True False
In a right-tailed test comparing two proportions, the test statistic was zcalc = +1.5. The p-value is:
We want to investigate an application performances of IOS and ANDROID operating systems. We selected 10 IOS and 10 ANDROID phones randomly and tested whether IOS phones run faster the application or not. We found t statistics by INDEPENDENT SAMPLE T TEST as 1.634. What are the H0 and Ha for this question? IOS phones runs faster the application than ANDROID phones? Why?
A study was conducted on whether yoga is practiced regularly among university students. According to this study, it was revealed that 116 out of 200 male students and 92 out of 200 female students regularly practice yoga. Can you suggest that the proportion of male students who regularly practice yoga is higher than the proportion of female students? (alpha=0.05) a) test by means of test statistic. b) Test by calculating the p-value.
The cost of unleaded gasoline in the Bay Area once followed an unknown distribution with a mean of $ 4.87 and a standard deviation of $ 0.05. A sample of 15 Bay Area gas stations are randomly chosen. We are interested in the average cost of gasoline for the 15 service stations. The distribution to use for the average cost of gasoline for the 15 service stations is: Select one: a. N (4.87, 0.0129) b. N (0.3247, 0.0006) c. N (4.87, 0.0033) d. N (4.87, 0.0002) e. N (0.3247, 0.0033)
In a random sample of males, it was found that 25 write with their left hands and 217 do not. In a random sample of females, it was found that 58 write with their left hands and 450 do not. Use a .05 significance level to test the claim that the rate of left-handedness among males is less than that among females. Identify the test statistic.z=?
A Z-test for single population mean is conducted with Ha: H < 10, at significance level of 0.05, The most significant result is suggested by the following test statistic -1.65 2.2 4.7 1.96 O3.7 -4.5
The manager of a political party wants to find out the association between the campaign spending (Large, medium and small) and the vote obtained (Majority, Average and minority). Use Chi-squared hypothesis test for association to test that there is an association between the variable in campaign spending and the variable in vote obtained with five percent level of significance. The manager uses MS excel to calculate the Chi-squared stat value and the result is 8.874. Critical value: At 1% = 13.277 :At 5% = 9.488 :At 10% = 7.779 1. State the decision rule 2. Conclusion and decision 3. State the alternative hypothesis and the null hypothesis
The coach of a very popular men’s basketball team claims that the average distance the fans travel to the campus to watch a game is 35 miles. The team members feel otherwise. A sample of 16 fans who travel to games was randomly selected and yielded a mean of M= 36 miles and s= 5 miles. Test the coach’s claim at the 5% (.05) level of significance. one-tailed or two-tailed test: State the hypotheses: df= tα or t value for the critical region = sM = t (test statistic)= Decision:

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In a test of h0 u=100 against ha :u>100 the sample data yielded the test statistic z=2.17 find and interpret the p-value