
In Exercises 47-52, use inductive reasoning to predict the next line in each sequence of computations. Then use a calculator or perform the arithmetic by hand to determine whether your conjecture is correct.

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Chapter 1 Solutions
MyLab Math with Pearson eText -- Access Card -- for Thinking Mathematically
- Ho: μ = 22 - H₁:22 x = 25.1, n = 59, σ = 8.45, α = .01 a. Use the data given to test the following hypotheses. (Round your answer to 2 decimal places, e.g. 15.25.) The value of the test statistic is and we b. Use the p-value to reach a statistical conclusion. (Round your answer to 4 decimal places, e.g. 0.1254.) Since the p-value of is than a/2 = .005, the decision is to: Appendix A Statistical Tables c. Using the critical value method, what are the critical sample mean values? (Round your answer to 3 decimal places, e.g. 15.254.) Critical mean values: Upper value: Lower value:arrow_forward- Ho=25 H:25 x = 28.1, n = = 55, σ = 8.47, α = .01 a. Use the data given to test the following hypotheses. (Round your answer to 2 decimal places, e.g. 15.25.) The value of the test statistic is and we b. Use the p-value to reach a statistical conclusion. (Round your answer to 4 decimal places, e.g. 0.1254.) Since the p-value of is than a/2 = .005, the decision is to: Appendix A Statistical Tables c. Using the critical value method, what are the critical sample mean values? (Round your answer to 3 decimal places, e.g. 15.254.) Critical mean values: Upper value: Lower value:arrow_forwardThe customer help center in your company receives calls from customers who need help with some of the customized software solutions your company provides. Your company claims that the average waiting time is 7 minutes at the busiest time, from 8 a.m. to 10 a.m., Monday through Thursday. One of your main clients has recently complained that every time she calls during the busy hours, the waiting time exceeds 7 minutes. You conduct a statistical study to determine the average waiting time with a sample of 35 calls for which you obtain an average waiting time of 8.15 minutes. If the population standard deviation is known to be 4.2 minutes, and a = 0.05, the p-value is approximately 0.05 0.025 ○ 0.053 ○ 0.10 ○ 0.026arrow_forward
- The procedures for doing hypothesis testing of proportions and hypothesis testing of means are similar, but what is one of the differences they have ?arrow_forwardConsider the following null and alternative hypotheses. Ho:μ≤67 Ha: μ> 67 These hypotheses. are not mutually exclusive are established incorrectly O indicate a one-tailed test with a rejection area in the left tail O indicate a one-tailed test with a rejection area in the right tail O indicate a two-tailed testarrow_forwardThe customer help center in your company receives calls from customers who need help with some of the customized software solutions your company provides. Your company claims that the average waiting time is 7 minutes at the busiest time, from 8 a.m. to 10 a.m., Monday through Thursday. One of your main clients has recently complained that every time she calls during the busy hours, the waiting time exceeds 7 minutes. You conduct a statistical study to determine the average waiting time with a sample of 35 calls for which you obtain an average waiting time of 8.15 minutes. If the population standard deviation is known to be 4.2 minutes, and a = 0.05, the appropriate decision is to O maintain status quo O fail to reject the 7-minute average waiting time claim O increase the sample size O reduce the sample size O reject the 7-minute claimarrow_forward
- The p-value is the probability of a statistic being at most as extreme as the observed value when Ho is false. the probability that the alternative hypothesis is true. O the probability that the null hypothesis is true. O the probability of a statistic being at most as extreme as the observed value when Ho is true. O the probability of a statistic being at least as extreme as the observed value when Ho is true.arrow_forwardmath g12arrow_forwardAnswer questions 2 and 4arrow_forward
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