Use pooled estimator of p. a. What is the p-value (to 4 decimals)? Use Table 1 from Appendix B. 0.0006 b. With a = 0.05, what is your hypothesis testing conclusion? Conclude the difference between the proportions is greater than 0

A sample of n = 10 scores has a mean of 7. If a new score of X = 18 is added to the sample, what will be the new value for the sample mean?     8.0     8.8     9.78     6.36

State the null and alternative hypotheses for the statistical test described below. Testing to see if there is evidence that a proportion is greater than 0.3. :: µ2 :: p : P1 :: P2 :: 0.3 :: x1 :: :: x2 :: P1 : P2 el :: Ho: i vs Ha: :: ::

Microsoft Word -... You are conducting a study to see if the proportion of voters who prefer the Democratic candidate is significantly different from 62% at a level of significance of a = 0.05. According to your sample, 27 out of 50 potential voters prefer the Democratic candidate. a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Select an answer v Ho: ? H₁: ? Select an answer ✓ c. The test statistic ? = d. The p-value= e. The p-value is ? a f. Based on this, we should Select an answer the null hypothesis. g. Thus, the final conclusion is that ... (please enter a decimal) (Please enter a decimal) (please show your answer to 3 decimal places.) (Please show your answer to 4 decimal places.) The data suggest the populaton proportion is significantly different from 62% at a = 0.05, so there is sufficient evidence to conclude that the proportion of voters who prefer the Democratic candidate is different from 62% O The data suggest the…

Mean S.D. corr. Aptitude 100 15 .66 Achievement 50 10   What is the standard error of estimate (i.e., )?     5.64     7.51     8.47     11.27

You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately o = 47.6. You would like to be 98% confident that your estimate is within 1.5 of the true population mean. How large of a sample size is required? Round up to nearest whole number. n = Question Help: Video Written Example Message instructor Submit Question Jump to Answer LockDown Browser P Type here to search

I only need help with parts c and d. Thank you!!!

State the conclusion based on the results of the test. The mean of the pressure required to open a certain valve is known to be u = 6.7 psi. Due to changes in the manufacturing process, the quality-control manager feels that the average pressure has changed. The null hypothesis was rejected. Choose the correct answer below. O A. The mean of the pressure has not changed. O B. There is not sufficient evidence that the mean of the pressure required to open a certain valve has changed. O C. There is not sufficient evidence that the mean of the pressure required to open a certain valve has not changed. O D. The mean of the pressure has changed. O E. There is sufficient evidence that the mean of the pressure required to open a certain valve has changed. O F. There is sufficient evidence that the mean of the pressure required to open a certain valve has not changed.