Executives of a supermarket chain are interested in the amount of time that customers spend in the stores during shopping trips. The mean shopping time, .spent by customers at the supermarkets has been reported to be 40 minutes, but executives have good reason to believe that u is greater than 40 minutes. Theexecutives hire a statistical consultant and ask her to perform a statistical test.To perform her statistical test, the consultant collects a random sample of shopping times at the supermarkets. She computes the mean of these times to be 47minutes and the standard deviation of the times to be 12 minutes.Based on this information, complete the parts below.(a) what are the null hypothesis 1, and the altermative hypothesis 1, that should be used for the test?(b) Suppose that the consultant decides to reject the null hypothesis. What sort of error might she be making?(Choose one)(c) Suppose the true mean shopping time spent by customers at the supermarkets is 50 minutes. Fil in the blanks todescribe a Type II error.A Type Il error would be (Choose one)v the hypothesis that is (Choose one)(Choose one) v when, in fact, is (Choose one)

Test is that whether the average is greater than 40 minutes. The type I error is defined as…

Answered: (a) what are the null hypothesis H, and…

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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Suppose a friend of yours was interested in comparing the meanreading scores of four ethnic groups in her classroom but has no idea what statistical procedure to use. So, she comes to you for advice since she knows you recently completed a statistics course. Your friend tells you that each group has 8 students. Given this information: (1) State the null and alternative hypotheses for this study (2) What is the dependent and independent variable for this study (3) What test statistic/hypothesis test would you select to determine if the means are significantly difference at the alpha .05 level?
Below is a set of exam 1 scores from our Statistics class. 7 of the scores come from females, and 7 come from males. Test the hypothesis that males and females scored differently on our first exam, using an (alpha level of .05.) Male Female 75 99 92 75 85 44 90 99 46 95 61 90 70 100 What is the apporpriate test, null hypothesis, alternative hypothesis, critical value(s), obtained statistic, make a decision what does this mean?
Could you help find the test statistic p-value and if the H0 should be reject or fails to reject
A researcher is interested in studying mean gill beat rates for fish in water with three different levels of calcium. The results of the experiment are stored in below. Set up the null and alternative hypotheses. What is the mean square error? State the F-statistic of the test as well as the p-value of the test. What is the conclusion of the test, in context? Test which two levels of calcium are most likely to find a difference in mean gill rates. State all three pairwise hypothesis tests and the p-values for each test. Calcium GillRate Low 55 Low 63 Low 78 Low 85 Low 65 Low 98 Low 68 Low 84 Low 44 Low 87 Low 48 Low 86 Low 93 Low 64 Low 83 Low 79 Low 85 Low 65 Low 88 Low 47 Low 68 Low 86 Low 57 Low 53 Low 58 Low 47 Low 62 Low 64 Low 50 Low 45 Medium 38 Medium 42 Medium 63 Medium 46 Medium 55 Medium 63 Medium 36 Medium 58 Medium 73 Medium 69 Medium 55 Medium 68 Medium 63 Medium 73 Medium 45…
I already answered the ones I understand I just need help with the two that are blank. Thanks!
(EM) It is suggested that the proportion of students using the in-campus service (EEM) is higher than the proportion of department students using the in-campus service. Of the 260 randomly selected students from EM, 65 students and 35 of the 140 randomly selected students from EEM said that they used the in-campus service. at the meaning level of 0.05, which of the following is the p-value calculated in the hypothesis test for the accuracy of the proposed opinion?Answer options group A)0.50 B)0.0065 C)0.236 D)0.79
Can you do this question correctly for me please
The display provided from technology available below results from using data for a smartphone carrier's data speeds at airports to test the claim that they are from a population having a mean less than 5.00 Mbps. Conduct the hypothesis test using these results. Use a 0.05 significance level. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim. Click the icon to view the display from technology. ..... Assuming all conditions for conducting a hypothesis test are met, what are the null and alternative hypotheses? Ο Α. Η : μ 5.00 Mbps D. Ho: µ= 5.00 Mbps H1: µ#5.00 Mbps Identify the test statistic. (Round to two decimal places as needed.) Display from technology T-Test µ<5.00 t= - 0.213135 p = 0.416103 X= 4.82 Sx = 5.665316 n= 45
What is the value of the test statistic for a test with a null hypothesis that mu = 250, Xbar = 260 the standard error = 5 and n = 100?
For a one-tailed hypothesis test (upper tail) the p-value is computed to be 0.037. If the test is being conducted at 99% confidence, the null hypothesis could be rejected or not rejected depending on the sample size could be rejected or not rejected depending on the value of the mean of the sample is not rejected is rejected
A manufacturer must test that his bolts are 4.00 cm long when they come off the assembly line. He must recalibrate his machines if the bolts are too long or too short. After sampling 121 randomly selected bolts off the assembly line, he calculates the sample mean to be 4.21 cm. He knows that the population standard deviation is 0.83 cm. Assuming a level of significance of 0.02, is there sufficient evidence to show that the manufacturer needs to recalibrate the machines? Step 3 of 3: Draw a conclusion and interpret the decision.
Is there a relationship between the number of votes received by candidates for public office and the amount spent on their campaigns? Candidate Amount spent (000) Votes received (000)Weber $3 14Taite $4 7Spencer $2 5Lopez $5 12 Using a 0.01 significance level, do the formal hypothesis test (using critical values).Remember to show your steps (including all relevant information) please show the steps on how to solve it. ( no excel please)

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