Does the average Presbyterian donate less than the average Catholic in church on Sundays? The 49 randomly observed members of the Presbyterian church donated an average of $29 with a standard deviation of $10. The 59 randomly observed members of the Catholic church donated an average of $31 with a standard deviation of $8. What can be concluded at the αα = 0.05 level of significance?  Find the test statistic and the p-value

Assume that the test scores for biostatistics midterm examination are normally distributed with a mean of 74 and a standard deviation of 10. i. Suppose that you receive a score of 88. What percent of the class received scores higher than yours?  ii. Suppose that the teacher wants to limit the number of A grades in the class to no more than 20%. What would be the lowest score for an A?

A random sample of 50 gas stations in Cook County, Illinois, resulted in a mean price per gallon of $2.60 and a standard deviation of $0.07. State the Empirical Rule. A histogram of the data indicates that the data follow a bell-shaped distribution. Use the Empirical Rule to determine the percentage of gas stations that have prices within three standard deviations of the mean. Determine the percentage of gas stations that have prices between $2.46 and $2.74, according to the Empirical Rule. Explain your calculations. Would a gas price of $2.99 be considered unusual in the statistical sense? Why or why not?

A quick survey of peanut butter prices had standard deviation and mean of $.26 and $3.68 respectively. Compute the area for a peanut butter jar costing more than $4.25

The mean cholesterol level for females in a population is 200 with a standard deviation of 25. Samples of size 64 are drawn from the population.  A. What is the mean of the sample means? B. What is the standard error of the sample means?

Does the average Presbyterian donate a different amount of money compared to the average Catholic in church on Sundays? The 55 randomly observed members of the Presbyterian church donated an average of $23 with a standard deviation of $6. The 41 randomly observed members of the Catholic church donated an average of $25 with a standard deviation of $10. What can be concluded at the a = 0.01 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: Select an answer v Select an answer v Selec r v (please enter a decimal) an answe Hị: Select an answer vSelect an answer v Select an answer v (Please enter a decimal) c. The test statistic (please show your answer to 3 decimal places.) d. The p-value = e. The p-value is ? -a f. Based on this, we should Select an answer v the null hypothesis. g. Thus, the final conclusion is that ... (Please show your answer to 4 decimal places.) O The results are statistically significant at a…