In a test of the hypothesis Ho: µs 55 versus Ha:µ> 55, a sample of n = 100 observations possessed mean x= 54.3 and standard deviation s=4.7. Find and interpret the p-value for this test. ..... The p-value for this test is (Round to three decimal places as needed.) Interpret the result. Select the correct choice below and fill in the answer box to complete your choice. (Round to three decimal places as needed.) O A. The probability (assuming that Ho is true) of observing a value of the test statistic that is at least as contradictory to the null hypothesis is O B. The probability (assuming that H, is true) of observing a value of the test statistic that is at most as contradictory to the null hypothesis is O C. The probability (assuming that Ho is true) of observing a value of the test statistic that is equal to the null hypothesis is

The mean number of eggs per person eaten in the United States is 223. Do college students eat a different number of eggs than the average American? The 51 college students surveyed averaged 237 eggs per person and their standard deviation was 39.3. What can be concluded at the a = 0.01 level of significance? %3D a. For this study, we should use Select an answer b. The null and altemative hypotheses would be: H 2 Select an answer v H 2vSelect an answer v c. The test statistic ? (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is | ? v a f. Based on this, we should Select an answer V the null hypothesis. g. Thus, the final conclusion is that... O The data suggest that the populaton mean is significantly different from 223 at a = 0.01, so there is statistically significant evidence to conclude that the population mean number of eggs consumed by college students per year is different from 223. Toctor O The data…

This assignment is worth 1 points. The extra point will be added to your overall course grade. For example: if you receive an 88% in the course you can receive up to 1 point giving you a new score of 89%. The following rubric will be used.  0.25 point for drawing the normal distribution curve with the mean value labeled on the curve and the appropriate area shaded. 0.25 point for determining the value of the standard deviation of the sample mean.  0.5 point for finding the correct probability.   All work must be shown in order to receive any credit.  Please upload your completed assignment here.    The length of time taken on the SAT for a group of students is normally distributed with a mean of 2.5 hours and a standard deviation of 0.25 hours. A sample size of n = 60 is drawn randomly from the population. Find the probability that the sample mean is between two hours and three hours.

The president of a college wants to determine the mean number of units that college students take per semester. How large of a sample is required in order to be 99% sure that a sample mean will be off by no more than 1.25 units? An initial study suggested that the standard deviation is approximately 2.1 units.

Suppose a set of data has a sample mean of 112 and a sample standard deviation of 8.3. What is the z-score for the value 127.8? Round the z-score to two decimal places.   Your Answer:

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…

Use z scores to compare the given values. The tallest living man at one time had a height of 252 cm. The shortest living man at that time had a height of 53.2 cm. Heights of men at that time had a mean of 172.68 cm and a standard deviation of 8.46 cm. Which of these two men had the height that was more extreme? see score past due Since the z score for the tallest man is z=] and the z score for the shortest man is z= the height that was more extreme. (Round to two decimal places.)

The means of the number of revolutions per minute of two competing engines are to be compared. Thirty engines are randomly assigned to be tested. Both populations have normal distributions. Table 10.4 shows the result. Do the data indicate that Engine 2 has higher RPM than Engine 1? Test at a 5% level of significance. Engine      Sample Mean Number of RPM         Population Standard Deviation  1                      1,500                                                       50  2                      1,600                                                       60

only answer the first three (following bartleby's rules). Note:I will post another question, for you to answer me the remaining exercises, ok?