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A study of 35 golfers showed that their averages score on a particular course was 92. The standard deviation of the sample is 5.
a. Find the best point estimate of the mean.
b. Find the 95% confidence interval of the mean score for all golfers.
c. Find the 95% confidence interval of the mean score if a sample of 60 golfers is used instead of a sample of 35.
d. Which interval is smaller? Explain.
The probability of a player weighing more than 241.25 pounds on a team with the mean weight of 200 pounds and a standard deviation of 25 pounds is ??
Colleges typically use grade point average cutoffs to decide who graduates with honors and who is accepted into certain programs (such as teacher education, for example).
Calculate the average of deposits per bank for FDIC- inured institutions during both time periods and describe the relationship between the two averages. Provide a reason for the difference.
Using the telephone numbers listed in your local directory as your population, randomly obtain 20 samples of size 3. From each telephone number identified as a source, take the fourth, fifth, and sixth digits.
Find the probability that their mean energy consumption level for September is greater than 1075 kWh.
What is the p value? Describe the steps in formal hypothesis testing. Make at least one comment for each step.
Pharmacies continually monitor their prescription filling process. A local pharmacy has noted that the time to fill a prescription for a generic antibiotic is normally distributed, with a mean of 13.3 minutes and a standard deviation of 2.8 minute..
What is the relationship between the amount spent per week on food and the size of the family? Do larger families spend more on food?
Consider the following time plot of the values of variable Y for each month of a 60-month period. This plot displays
Identify and briefly discuss two important concepts ( Prediction and Regression/ Correlation or Regression) applicable to analytical methodology.
Determine the probability that a randomly selected teacher earns more than $525 per week?
To forecast attendance at an yearly tennis tournament a model has been developed that uses attendance from the previous year and the amount spent for advertising this year.
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