Let sigma denotes true average serum receptor concentration for all pregnant women. The average for all women is known to be 5.63. It is reported that P-value > 0.10 for a test of H0: sigma = 5.63 versus Ha: u does not equal 5.63 based on n = 176 pregnant women. Using a significance level of 0.01, what would you conclude?

Standardized measures seem to indicate that the average level of anxiety has increased gradually over the past 50 years. (Twenge, 2000). In the 1950s , the average score on the Child Manifest Anxiety Scale was ?= 15.1. A sample of n = 16 of today's children produces a mean score of M = 23.3 with SS = 240.  Based on the sample, has there been a significant increase in the average level of anxiety since the 1950s?  Use a one-tail test with α= .05. ****Is the critical region 1.753? Positive or Negative?**

According to a survey conducted by the Association for Dressing and Sauces, 85% of American adults eat salad at least once a week. A nutritionist suspect that the percentage is higher that this. She conducts a survey of 200 American adults an finds that 171 of them eat salad at least once a week. Conduct the appropriate test that addresses the nutritionist's suspicions. Use the a = 0.1 level of significance. What is the test statistic? t-score population parameter Z-Score standard deviation

Data for fuel economy ratings in mi/gal for different cars are listed below. Each pair of data represents the rating using the Old test and the New test.  Old (x) 31 22 23 33 27 21 22 19 31 16 New (y) 25 17 26 26 23 18 19 16 28 19 Find the best predicted value for the New test method given that the Old test method rating was 26. Use a significance level of 0.05.Round your answer to 1 decimal place, if needed.

During an economic​ crisis, the average value of homes in a community of 36 homes lost ​$9445 with a standard deviation of $1300. The average home value in the region lost ​$8990. Was this community of 36 homes​unusual? Use a​ t-test to decide if the average loss observed was significantly different from the region value. Use a level of significance α=0.05. Identify the hypotheses for the test.   H0: μ ▼   not equals≠ equals= greater than> less than< nothing HA: μ ▼   equals= greater than> not equals≠ less than< nothing The test statistic is nothing. ​(Round to two decimal places as​ needed.) The​ P-value is nothing. ​(Round to three decimal places as​ needed.) What is the conclusion of the​ test? Was the average loss observed significantly different from the region​ value?   ▼   Reject Fail to reject the null hypothesis because the​ P-value is ▼   greater less than the given significance​ level, and conclude that the…

Listed below are the number of cricket chirps in 1 min and the corresponding temperatures in degrees Fahrenheit. Is there sufficient evidence to conclude that there is a relationship between the number of cricket chirps in 1 min and the​ temperature? Use a significance level of α=0.05. Chirps in 1 min  1073  977  1186  888  994  1087  970  952 Temperature (F)  75.4  83.6  73.2  69.3  72.7  74.9  90.8  88.7 1. Determine the null and alternative hypotheses for this test. 2. Find the value of the correlation coefficient.   3. Determine the critical​ value(s) of the correlation coefficient.

Women are recommended to consume 1700 calories per day. You suspect that the average calorie intake is different for women at your college. The data for the 12 women who participated in the study is shown below: 1808, 1681, 1723, 1847, 1808, 1858, 1461, 1449, 1631, 1635, 1815, 1874 Assuming that the distribution is normal, what can be concluded at the αα = 0.01 level of significance? For this study, we should use     The null and alternative hypotheses would be:       H0:H0:                   H1:H1:               The test statistic     =  (please show your answer to 3 decimal places.) The p-value =  (Please show your answer to 4 decimal places.) The p-value is     αα Based on this, we should      the null hypothesis. Thus, the final conclusion is that ... The data suggest the population mean is not significantly different from 1700 at αα = 0.01, so there is sufficient evidence to conclude that the population mean calorie intake for women at your college is equal to 1700. The data…