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Join date: May 18, 2022

AP Statistics Investigatory Task answer key In statistical testing, p. the shaded circle shows the investigator's postulated value of the true population mean and the solid line shows the investigator's estimate of the true population mean. 3 The black curve shows the distribution of the observed results. Tandem, inc., ap statistics investigative task answer key !C! The Response Distributions are approximately Normal with little overlap. AP Statistics Chapter 8: Investigate, Using the Tests. Check, normal distribution of the population. Credibility of the test. The investigator tests the hypothesis that the test results are drawn from a normal population distribution with mean equal to 5 and a standard deviation of 2 by using both parametric and nonparametric statistical tests. Based on a sample of the study population, he conducts a parametric t-test for testing the hypothesis. and then a nonparametric test for testing the hypothesis. Credibility of the test. Based on a sample of the study population, he conducts a parametric t-test for testing the hypothesis. and then a nonparametric test for testing the hypothesis. and then a nonparametric test for testing the hypothesis. Summary of Chapter 10 AP Statistics Ch 7 - AP Statistics - Hypothesis Testing with One Sample. two normal distributions. The researcher hypothesizes that the data are normally distributed with a mean of 60 and a standard deviation of 20. The investigator checks the normality of the data with a histogram, for testing the hypothesis. He also computes and graphically displays the mean, standard deviation, and other measures of central tendency and variability for the data. Using the data, he conducts one-sample t-tests. He draws a dashed line at the values of 0 and 60 to indicate the locations of the observed mean and the hypothesized mean, respectively. The investigator uses the results of the t-test to make inferences about the true value of the mean. The investigator uses the results of the t-test to make inferences about the true value of the mean. For this hypothesis, the investigator cannot reject the null hypothesis. However, because the confidence interval for the true mean excludes the investigator's postulated value of the true mean, he cannot make a strong statement about the true value of the mean. For this hypothesis, the investigator cannot reject the null hypothesis. However, because the confidence interval for the true mean

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