Your group is expected to interview at least 60 random persons about their preference for shopping online and whether they would be interested in such services. Record the following for each respondent: Conduct a hypothesis test to determine if the marginally higher price they would be willing to pay for the good associated with gender. Clearly outline each step. yes no total male 9 10 19 female 18 23 41 total 27 33 60
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Your group is expected to interview at least 60 random persons about their preference for shopping online and whether they would be interested in such services. Record the following for each respondent:
Conduct a hypothesis test to determine if the marginally higher price they would be willing to pay for the good associated with gender. Clearly outline each step.
yes | no | total | |
male | 9 | 10 | 19 |
female | 18 | 23 | 41 |
total | 27 | 33 | 60 |
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- As a result of complaints from customers about delivery times, the manager at a pizza delivery service is ready to undertake a study to determine whether the average delivery time differs from the status quo of 30 minutes. State the null and alternative hypotheses.In order to determine a realistic price for a new product that a company wants to market the company’s research department selected 10 sites thought to have essentially identical sales potential and offered the product in each at a different price. The resulting sales are recorded in the accompanying table: Price ($) Sales ($1,000s) 15.00 15 15.50 14 16.00 16 16.50 9 17.00 12 17.50 10 18.00 8 18.50 9 19.00 6 19.50 5 e). At 5% level of significance, is there evidence of a linear relationship between the sales and price using Minitab f). At 5% level of significance, can we conclude that sales are negatively impacted as the price increases using Minitab g). How useful is the linear model you have established in this problem. Assess the model and explain carefully the procedures used in the assessment.In order to determine whether or not there is a significant difference between the hourly wages of two companies, the following data have been accumulated. Company 1 Company 2 n1 = 80 n2 = 60 x̄1 = $10.80 x̄2 = $10.00 σ1 = $2.00 σ2 = $1.50 Refer to Exhibit 10-13. The null hypothesis for this test is _____.
- The National Institute of Mental Health published an article stating that in any two-year period, approximately 10.5percent of American adults suffer from depression or a depressive illness. Suppose that in a survey of 150 people in a certain town, eight of them suffered from depression or a depressive illness. If you were conducting a hypothesis test to determine if the true proportion of people in that town suffering from depression or a depressive illness is lower than the percent in the general adult American population, what would the null and alternative hypotheses be?Which of these is a question that would require a z test? Question 6 options: Does a sample of couples who communicate primarily by texting have a higher relationship satisfaction than that of a sample of couples who communicate primarily by phone? Does a sample of nurses in large hospitals get sick more often than a sample of nurses in smaller hospitals? Does a sample of people from rural communities have different levels of social intelligence than a sample of people from urban centers? Does a sample of purebred dogs live longer than dogs in general?In low-speed crash tests of five cars, the repair costs were computed for a factory authorizedrepair and an independent repair workshop. The results are listed in Table 2. Is there sufficientevidence to support the claim that the independent workshop has lower repair costs? Use a 0.01significance level.Table 2 car 1 2 3 4 5 authorized repair centre X1 RM797 RM571 RM904 RM1147 RM418 independent workshop X2 RM523 RM488 RM875 RM911 RM297 D=X1 - X2 274 83 29 236 121 D2 = (X1 -X2)2 75076 6889 841 55696 14641
- A sample of 12 male and 12 female students were surveyed and the amount spent on food last week were recorded. The results are summarized in the table below. Test for the hypothesis that the weekly amount spent on food of male and female students is the same, at a=0.10. Male Female 623 685 537 629 613 517 588 580 651 658 688 582 526 614 579 528 814 655 878 804 660 549 722 617 a. What are the null and alternative hypotheses?b. What is the critical value? (4 decimal points)c. What is the test statistic? (4 decimal points)e. Reject or accept null hypothesis?When companies are designing a new product, one of the steps typically taken is to see how potential buyers react to a picture or prototype of the proposed product. The product-development team for a notebook computer company has shown picture A to a large sample of potential buyers and picture B to another, asking each person to indicate what they "would expect to pay" for such a product. The data resulting from the two pictures are provided in file (sheet 6). Using the 0.05 level of significance, determine whether the prototypes might not really differ in terms of the price that potential buyers would expect to pay. Sheet 6 ComputerA ComputerB 3 317 2 965 2 680 3 083 3 286 3 137 2 859 2 950 2 693 3 161 2 945 2 918 2 908 3 158 3 193 3 082 3 240 2 903 3 040 3 103…