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2. An individual's present route to wark results in, on average, 40 minutes of travel time per trip. An alternate raute has been suggested by a friend, who claims that it will reduce the travel time. Suppose that the new route was tried on 10 randomly chosen accasions with the following times resulting: 44, 38.5, 37.5, 39, 38.2, 36, 42, 36.5, 36, 34 Do these data establish the claim that the new route is sharter, at the (a) 1 percent (b) 5 percent (c) 10 percent level of significance?

2. An individual's present route to wark results in, on average, 40 minutes of travel time per trip. An alternate raute has been suggested by a friend, who claims that it will reduce the travel time. Suppose that the new route was tried on 10 randomly chosen accasions with the following times resulting: 44, 38.5, 37.5, 39, 38.2, 36, 42, 36.5, 36, 34 Do these data establish the claim that the new route is sharter, at the (a) 1 percent (b) 5 percent (c) 10 percent level of significance?

MATLAB: An Introduction with Applications
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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1. Suppose you were to explain to a person who has not yet studied statistics that a statistical test has just resulted in the rejection of the null hypothesis that a population mean u is equal to 0. That is, lig: = 0. has been rejected, say, at the 5 percent level of significance. Which of the following is a more accurate statement? (a) The evidence of the data indicated that the population mean differs significantly from 0. (b) The evidence of the data was significant enough to indicate that the population mean differs from 0. 2. An individual's present route to work results in, on average, 40 minutes of travel time per trip. An alternate route has been suggested by a friend, who claims that it will reduce the travel time. Suppose that the new route was tried on 10 randomly chosen occasions with the following times resulting: 44, 38.5, 37.5, 39, 38.2, 36, 42, 36.5, 36, 34 Do these data establish the claim that the new route is sharter, at the (a) 1 percent (b) 5 percent (c) 10 percent level of significance? 3. It has been claimed that over 30 percent of entering college students have blood cholesteral levels of at least 200. Randomly select 20 students in the list in Table 1 to test this hypothesis. What conclusion do you draw at the 5 percent level of significance? 4. Choose a random sample of 16 women ( female (F)) from the list provided in table 1, and use their weights to test the null hypothesis that the average weight of all the women on the list is not greater than 110 pounds. Use the 5 percent level of significance.
Transcribed Image Text:1. Suppose you were to explain to a person who has not yet studied statistics that a statistical test has just resulted in the rejection of the null hypothesis that a population mean u is equal to 0. That is, lig: = 0. has been rejected, say, at the 5 percent level of significance. Which of the following is a more accurate statement? (a) The evidence of the data indicated that the population mean differs significantly from 0. (b) The evidence of the data was significant enough to indicate that the population mean differs from 0. 2. An individual's present route to work results in, on average, 40 minutes of travel time per trip. An alternate route has been suggested by a friend, who claims that it will reduce the travel time. Suppose that the new route was tried on 10 randomly chosen occasions with the following times resulting: 44, 38.5, 37.5, 39, 38.2, 36, 42, 36.5, 36, 34 Do these data establish the claim that the new route is sharter, at the (a) 1 percent (b) 5 percent (c) 10 percent level of significance? 3. It has been claimed that over 30 percent of entering college students have blood cholesteral levels of at least 200. Randomly select 20 students in the list in Table 1 to test this hypothesis. What conclusion do you draw at the 5 percent level of significance? 4. Choose a random sample of 16 women ( female (F)) from the list provided in table 1, and use their weights to test the null hypothesis that the average weight of all the women on the list is not greater than 110 pounds. Use the 5 percent level of significance.
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