The weights of college football players are normally distributed with a mean of 200 pounds and...
The weights of college football players are normally distributed with a mean of 200 pounds and a standard deviation of 50 pounds.
b. What is the standard score of the sample mean of 170 pounds?
c. What is the probability that the mean of a sample of size 15 will be more than 170 pounds?
d. What is the standard score of a sample mean of 220 pounds?
e. What is the probability that the mean of a sample of size 15 will be less than 220 pounds?
f. What is the probability that the mean of a sample of size 15 will be between 170 and 220 pounds.
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The weights of college football players are normally distributed
with a mean of 200 pounds and...
The weights of college football players are normally distributed with a mean of 200 pounds and...
The weights of college football players are normally distributed with a mean of 200 pounds and a standard deviation of 50 pounds. If a college football player is randomly selected, find the probability that he weighs between 170 and 220 pounds. Round to four decimal places A. 0.2257 B. 0.1554 C. 0.3812 D. 0.0703
MULTIPLE CHOICE. Choose the one alternative that best compless the statement or answers the question. 1)...
MULTIPLE CHOICE. Choose the one alternative that best compless the statement or answers the question. 1) 1) A bank's loan officer rates applicants for credit. The ratings are normally distributed with a mean of 200 and a standard deviation of 50. If an applicant is randomly selected, find the probability of a rating that is between 200 and 275. A) 0.5 B) 0.9332 C) 0.4332 D) 0.0668 2) The weights of college football players are normally distributed with a mean...
1) The weights of bowling balls are normally distributed with mean 11.5 pounds and standard deviation...
1) The weights of bowling balls are normally distributed with mean 11.5 pounds and standard deviation 2.7 pounds. A sample of 36 bowling balls is selected. What is the probability that the average weight of the sample is less than 11.00 pounds? Write only a number as your answer. Round to 4 decimal places (for example 0.0048). Do not write as a percentage. 2) A survey of high school students revealed that the numbers of soft drinks consumed per month...
A sample of 50 football players at Ohio State weigh 208 pounds with a standard deviation...
A sample of 50 football players at Ohio State weigh 208 pounds with a standard deviation of 22 pounds. A sample of 40 football players at Michigan weigh 200 pounds with a standard deviation of 20 pounds. Can you prove the claim that there is a difference between the average weights of football players at Ohio State and Michigan? Using the .01 significance level. (z or t value = 1.80) What is the p-value?
The weights of 9 year old male children are normally distributed population with a mean of...
The weights of 9 year old male children are normally distributed population with a mean of 80 pounds and a standard deviation of 17 pounds. Determine the probability that a random sample of 26 such children has an average less than 72 pounds. Round to four decimal places. QUESTION 8 A Test has scores that are normally distributed with a mean of 71 and a standard deviation of 15. Determine the probability that a random sample of 26 test scores...
As part of a study, 800 college football players are randomly chosen and their weights taken....
As part of a study, 800 college football players are randomly chosen and their weights taken. The distribution of the weights is approximately normal. The average weight is 235 pounds and the standard deviation is 25 pounds. Approximately how many players had weights between 235 and 252 pounds?
2. Birth weights are normally distributed with a mean of 7.6 pounds and a standard deviation...
2. Birth weights are normally distributed with a mean of 7.6 pounds and a standard deviation of 1.23 pounds. What is the probability that a newborn weighs more than 11.3 pounds? Ans 2 3. X is binomial with n = 700 and p = .32. Use the standard normal distribution to approximate P(207 < X < 256). Ans 3 4. A population has a known variance of 22.9. If you draw random samples of size 24 and construct the sampling...
Heavy football players: Following are the weights, in pounds
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birth weights of full-term babies in a certain region are normally distributed with mean 7.125 pounds...
birth weights of full-term babies in a certain region are normally distributed with mean 7.125 pounds and standard deviation 1.290 pounds,find the probability that a randomly selected new born will weigh less than 5.5 pounds
The weights for newborn babies is approximately normally distributed with a mean of 6.4 pounds and...
The weights for newborn babies is approximately normally distributed with a mean of 6.4 pounds and a standard deviation of 1.2 pounds. Consider a group of 1600 newborn babies: 1. How many would you expect to weigh between 3 and 9 pounds? 2. How many would you expect to weigh less than 8 pounds? 3. How many would you expect to weigh more than 6 pounds? 4. How many would you expect to weigh between 6.4 and 10 pounds?
MULTIPLE CHOICE. Choose the one alternative that best compless the statement or answers the question. 1) 1) A bank's loan officer rates applicants for credit. The ratings are normally distributed with a mean of 200 and a standard deviation of 50. If an applicant is randomly selected, find the probability of a rating that is between 200 and 275. A) 0.5 B) 0.9332 C) 0.4332 D) 0.0668 2) The weights of college football players are normally distributed with a mean...
A sample of 50 football players at Ohio State weigh 208 pounds with a standard deviation of 22 pounds. A sample of 40 football players at Michigan weigh 200 pounds with a standard deviation of 20 pounds. Can you prove the claim that there is a difference between the average weights of football players at Ohio State and Michigan? Using the .01 significance level. (z or t value = 1.80) What is the p-value?
2. Birth weights are normally distributed with a mean of 7.6 pounds and a standard deviation of 1.23 pounds. What is the probability that a newborn weighs more than 11.3 pounds? Ans 2 3. X is binomial with n = 700 and p = .32. Use the standard normal distribution to approximate P(207 < X < 256). Ans 3 4. A population has a known variance of 22.9. If you draw random samples of size 24 and construct the sampling...
Heavy football players: Following are the weights, in pounds, for samples of offensive and defensive linemen on a professional football team at the beginning of a recent year. (a) Find the sample standard deviation for the weights for the offensive linemen. Round the answer to at least one decimal place(b) Find the sample standard deviation for the weights for the defensive linemen. Round the answer to at least one decimal place
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