Suppose the Census Bureau has determined that on average college graduates with 10 years of experience earn $87,000 per year. You are interested in whether the average UNH graduate at that level of experience has a different average earnings. You sample 46 UNH grads and find i = $89,950 and s = $5500 State the appropriate null hypothesis: 1) Ho: ã = 0 2) Họ: x = $89,950 3) Ho: μ= 0 ) H: μ $87,000 2.
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- Find the Type II error given that the null hypothesis, H0, is: there are no more than 15% of structures in the county were built without permits.And, the alternative hypothesis, Ha, is: a building inspector claims that more than 15% of structures in the county were built without permits. Select the correct answer below: The building inspector concludes that more than 15% of the structures in the county were built without permits when, in fact, no more than 15% of the structures were built without permits. The building inspector concludes that more than 15% of the structures in the county were built without permits when, in fact, more than 15% of the structures were built without permits. The building inspector cannot conclude that more than 15% of the structures in the county were built without permits when, in fact, no more than 15% of the structures were built without permits. The building inspector cannot conclude that more than 15% of the structures in the county were…A store manager hypothesizes that the average number of pages a person copies on the store's copy machine is less than 40. A sample of 31 customers' orders is selected. At α=0.05, is there enough evidence to support the claim using the P-value method? Assume a=30.9 2 2 5 32 5 29 8 2 49 21 1 24 72 70 21 85 61 8 42 3 15 27 113 36 37 5 3 58 82 9 2 State the hypotheses and identify the claim. :H0: claim or not claim ▼(Choose one) :H1: claim or not claim ▼(Choose one) The hypothesis test is a ▼(Choose one) one tailed or two tailed test.1. An original claim is made that more than 50% of American consumers are not comfortable with the use of drone delivery for merchandise. Hypothesis testing results in Failure to Reject the Null hypothesis. Using Figure 8- 5 on page 366 of the text, clearly state the final conclusion reached from this hypothesis test.
- A group of n = 8 students wants to know if the commuting time from home to college by bus is less than the commuting time by car. For this, each of them recorded the time spent using each means of transport. Recorded travel times are shown below. Each pair of values refers to a student, the first value being the time spent by car and the second by bus (both in minutes). Proceed with a hypothesis test appropriate to the significance level α=6%. studen 1 2 3 4 5 6 7 8 Car 15 20 20 20 17 15 10 18 bus 10 22 15 20 12 10 12 10 Difference 5 -2 5 0 5 5 -2 8 a. What range of values is the p-value in?b. There is evidence to reject H0 with the level of significance adopted?A group of n = 8 students wants to know if the commuting time from home to college by bus is less than the commuting time by car. For this, each of them recorded the time spent using each means of transport. Recorded travel times are shown below. Each pair of values refers to a student, the first value being the time spent by car and the second by bus (both in minutes). Proceed with a hypothesis test appropriate to the significance level α=6%. studen 1 2 3 4 5 6 7 8 Car 15 20 20 20 17 15 10 18 bus 10 22 15 20 12 10 12 10 Difference 5 -2 5 0 5 5 -2 8 a. The test hypotheses in this study are: H0: μd=μCar−μBus=0 and Ha: μd=μCar−μBus > 0?b. The test statistic value calculated based on the data is:c. The critical (absolute) value of the test for the desired significance level is:A newsletter publisher believes that 25%of their readers own a personal computer. Is there sufficient evidence at the 0.01 level to substantiate the publishers claim? State the null and alternative hypothesis for the above scenario.
- 1) The manager at Gre3n randomly samples 50 glass juicing bottles of hemp seed smoothies. The manager is concerned that the glass juicing bottles may be filled to an amount different from 24 ounces. a) State suitable null and alternative hypotheses. b) How can the manager make a Type I error? c) How can the manager make a Type II error? d) Will the hypothesis test procedure prove that the glass juicing bottles are filled to an amount different from 24 ounces?In Cleveland, a sample of 73 mail carriers showed that 10 had been bitten by an animal during one week. In Philadelphia, in a sample of 80 mail carriers, 16 had received animal bites. WHat is the approrpiate null hypothesis for this problem?Suppose a group of 700 smokers (who all wanted to give up smoking) were randomly assigned to receive an antidepressant drug or a placebo for six weeks. Of the 147 patients who received the antidepressant drug, 18 were not smoking one year later. Of the 553 patients who received the placebo, 206 were not smoking one year later. Given the null hypothesis ?0:(?????−????????)=0H0:(pdrug−pplacebo)=0 and the alternative hypothesis ??:(?????−????????)≠0Ha:(pdrug−pplacebo)≠0, conduct a test to see if taking an antidepressant drug can help smokers stop smoking. Use ?=0.04α=0.04, (a) The test statistic is (b) The P-value is