Test the given claim. Assume that a simple random sample is selected from a normally distributed population. Use the traditional method of testing hypotheses.Company A uses a new production method to manufacture aircraft altimeters. A simple random sample of new altimeters resulted in errors listed below. Use a 0.05 level of significance to test the claim that the new production method has errors with a standard deviation greater than 32.2​ ft, which was the standard deviation for the old production method. If it appears that the standard deviation is​ greater, does the new production method appear to be better or worse than the old​ method? Should the company take any​ action? -40​, 75​, -21​, -74​, -43​, 12​, 19​, 53​, -5​, -51​, -106​, -106 Find the test statistic.chi squared X2= Determine the critical​ value(s)

A 0.01 significance level is used for a hypothesis test of the claim that when parents use a particular method of gender​ selection, the proportion of baby girls is different from 0.5. Assume that sample data consists of 55 girls in 100 ​births, so the sample statistic of 1120 results in a z score that is 1 standard deviation above 0. Complete parts​ (a) through​ (h) below.Click here to view page 1 of the Normal table. LOADING...  Click here to view page 2 of the Normal table. LOADING...Question content area bottomPart 1a. Identify the null hypothesis and the alternative hypothesis. Choose the correct answer below.A.H0​: p=0.5H1​: p≠0.5B.H0​: p=0.5H1​: p>0.5C.H0​: p=0.5H1​: p<0.5D.H0​: p≠0.5H1​: p=0.5Part 2b. What is the value of α​?α=enter your response here ​(Type an integer or a​ decimal.)Part 3c. What is the sampling distribution of the sample​ statistic? χ2 Normal distribution Student​ (t) distribution

Canvas X C Bastien, Inc. has been manufacturing small automobiles that have averaged 50 miles per gallon of gasoline in highway driving. The company has developed a more efficient engine for its small cars and now advertises that its new small cars average more than 50 miles per gallon in highway driving. An independent testing service road-tested 36 of the automobiles. The sample showed an average of 51.5 miles per gallon. The population standard deviation is 6 miles per gallon. a. With a .05 level of significance, test to determine whether or not the manufacturer's advertising campaign is legitimate. b. What is the p-value associated with the sample results? (CSLO 1,6,7) Edit Format Table 12pt v Paragraph BIUA > 2 T² ||

A medical researcher wishes to estimate the mean systolic blood pressure of heart surgery patients the day following surgery. She desires a margin of error of 2.2 mmHg. Past studies suggest that a population standard deviation of 41 mmHg is reasonable. Estimate the minimum sample size needed to estimate the population mean with the stated accuracy. OA. 1,389 OB. 37 OC. 695 OD. 3,056 $ 10 % 9: 17 [7] hp C 8 BICCE 9 ho ) fi num Ik + insert Next 5:04 PM 10/13/2022 prt scr backspace delete

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A national manufacturer of ball bearings is experimenting with two different processes for producing precision ball bearings. It is important that the diameters be as close as possible to an industry standard. The output from each process is sampled, and the average error from the industry standard is measured in millimeters. The results are presented here.    Process A Process B Sample mean 2.0 3.0 Standard deviation 1.0 0.5 Sample size 12 14 The researcher is interested in determining whether there is evidence that the two processes yield different average errors. The population standard deviations are unknown but are assumed equal. This example is what type of test?   Multiple Choice   A one-sample test of means   A two-sample test of means   A paired t-test   A test of proportions