A home improvement company is interested in improving customer satisfaction rate from the 51% currently claimed. The company sponsored a survey of 136 customers and found that 76 customers were satisfied. What is the test statistic z? What is the p-value? Does sufficient evidence exist that the customer satisfaction rate is different than the claim by the company at a significance level of α=0.1? Select: _____ Yes OR _____ No
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A home improvement company is interested in improving customer satisfaction rate from the 51% currently claimed. The company sponsored a survey of 136 customers and found that 76 customers were satisfied.
What is the test statistic z?
What is the p-value?
Does sufficient evidence exist that the customer satisfaction rate is different than the claim by the company at a significance level of α=0.1?
Select: _____ Yes OR _____ No
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- What is meant by the sample space of an experiment?A computer manufacturer believes that the proportion of hardware malfunctions is different in humid climates than in dry climates. To test this claim, the manufacturer takes a random sample of 400 machines sold in Florida (humid) and 400 machines sold in Arizona (dry). The manufacturer finds that 44 of the machines in Florida and 24 of the machines in Arizona had hardware malfunctions. 1.Compute the p-value. 2. Does the evidence support the computer manufacturer's claim at the 10% significance level?A home improvement company is interested in improving customer satisfaction rate from the 55% currently claimed. The company sponsored a survey of 240 customers and found that 147 customers were satisfied. What is the test statistic z? What is the p-value? Does sufficient evidence exist that the customer satisfaction rate is different than the claim by the company at a significance level of a=0.05?
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- Use the dataset HT_2448.xls. Using Excel, conduct a t-test (at the alpha = 0.01 significance level) on whether the mean of X1 is equal to 100. What do you conclude from this sample data? Is the population mean equal to 100? Group of answer choices: a-You cannot reject the null hypothesis. You conclude that the population mean is equal to 100. b-You reject the null hypothesis. You conclude that the population mean is equal to 100. c-You reject the null hypothesis. You conclude that the population mean is not equal to 100. d-You cannot reject the null hypothesis. You conclude that the population mean is not equal to 100. Data set HT_2448.xls X1 X2102.04 96.13100.47 97.63103.17 95.4295.09 104.41103.81 102.0895.36 103.33103.38 112.25100.26 96.9397.24 100.1999.61 102.7096.00 106.94100.69 102.29100.50 100.0098.81 97.6795.15 99.09100.01 98.57102.88 97.70101.36 108.11103.05 106.9496.17…In a controlled laboratory experiment, scientists at the University of Minnesota discovered that 25% of a certain strain of rats subjected to a 20% coffee bean diet and then force-fed a powerful cancer-causing chemical later developed cancerous tumors. Would we have reason to believe that the proportion of rats developing tumors when subjected to this diet has increased if the experiment were repeated and 16 of 48 rats developed tumors? Use a 0.05 level of significance.In a study of the accuracy of fast food drive-through orders, one restaurant had 40 orders that were not accurate among 321 orders observed. Use a 0.01 significance level to test the claim that the rate of inaccurate orders is equal to 10%. Does the accuracy rate appear to be acceptable? Identify the null and alternative hypotheses for this test. Choose the correct answer below. A. H0: p≠0.1 H1: p=0.1 B. H0: p=0.1 H1: p<0.1 C. H0: p=0.1 H1: p≠0.1 D. H0: p=0.1 H1: p>0.1 Identify the test statistic for this hypothesis test. The test statistic for this hypothesis test is ______ (Round to two decimal places as needed.) Identify the P-value for this hypothesis test. The P-value for this hypothesis test is _______ (Round to three decimal places as needed.) Identify the conclusion for this hypothesis test. A. Reject H0. There is not sufficient evidence to warrant rejection of the claim that the rate of…