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The amounts of time per workout an athlete uses a stairclimber are normally distributed, with a...
The amounts of time per workout an athlete uses a stairclimberare normally distributed, with a...
The amounts of time per workout an athlete uses a stairclimber are normally distributed, with a mean of 21 minutes and a standard deviation of 6 minutes. Find the probability that a randomly selected athlete uses a stairclimber for (a) less than 16 minutes, (b) between 21 and 28 minutes, and (c) more than 30 minutes.
please answer all three questions. The monthly utility bills in a city are normally distributed, with...
please answer all three questions.
The monthly utility bills in a city are normally distributed, with a mean of $100 and a standard deviation of $16. Find the probability that a randomly selected utility bill is (a) less than $66, (b) between $81 and $90, and (c) more than $100. (a) The probability that a randomly selected utility bill is less than $66 is (Round to four decimal places as needed.)
The amounts a soft drink machine is designed to dispense for each drink are normally distributed,...
The amounts a soft drink machine is designed to dispense for each drink are normally distributed, with a mean of 12.3 fluid Ounces and a standard deviation of 0.2 fluid Ounce. A drink is randomly selected. (a) Find the probability that the drink is less than 12.2 fluid Ounces. (b) Find the probability that the drink is between 12 and 12.2 fluid Ounces. (c) Find the probability that the drink is more than 12.6 fluid Ounces. Can this be considered...
In a recent year, the scores for the reading portion of a test were normally distributed,...
In a recent year, the scores for the reading portion of a test were normally distributed, with a mean of 20.2 and a standard deviation of 5.4. Complete parts (a) through (d) below. (a) Find the probability that a randomly selected high school student who took the reading portion of the test has a score that is less than 16. The probability of a student scoring less than 16 is . (Round to four decimal places as needed.) (b) Find...
In a recent year, the total scores for a certain standardized test were normally distributed
In a recent year, the total scores for a certain standardized test were normally distributed, with a mean of 500 and a standard deviation of 10.4. Answer parts (a)- (d) below.(a) Find the probability that a randomly selected medical student who took the test had a total score that was less than 494 .The probability that a randomly selected medical student who took the test had a total score that was. less than 494 is 0.2809.(Round to four decimal places...
The monthly utility bills in a city are normally distributed, with a mean of $100 and a standard deviation of $14
The monthly utility bills in a city are normally distributed, with a mean of $100 and a standard deviation of $14. Find the probability that a randomly selected utility bill is (a) less than $65, (b) between $87 and $100, and (c) more than $110. (a) The probability that a randomly selected utility bill is less than $65 is _______ (Round to four decimal places as needed.) Use the normal distribution to the right to answer the questions. (a) What percent of the...
Assume the random variable x is normally distributed with mean u = 80 and standard deviation...
Assume the random variable x is normally distributed with mean u = 80 and standard deviation c=5. Find the indicated probability. P(65<x< 73) P(65<x< 73)=0 (Round to four decimal places as needed.) X 5.2.17 Use the normal distribution of SAT critical reading scores for which the mean is 507 and the standard deviation is 122. Assume the vari (a) What percent of the SAT verbal scores are less than 550? (b) If 1000 SAT verbal scores are randomly selected, about...
my C Cour The times per week a student uses a lab computer are normally distributed, with a mean of 5.9 hours and a...
my C Cour The times per week a student uses a lab computer are normally distributed, with a mean of 5.9 hours and a standard deviation of 1.4 hours. A student is randomly selected. Find the following probabilities. Anno (a) Find the probability that the student uses a lab computer less than 4 hours per week. (b) Find the probability that the student uses a lab computer between 6 and 8 hours per week. (c) Find the probability that the...
In a recent year, the scores for the reading portion of a test were normally distributed,...
In a recent year, the scores for the reading portion of a test were normally distributed, with a mean of 21.6 and a standard deviation of 6.2. Complete parts (a) through (d) below. (a) Find the probability that a randomly selected high school student who took the reading portion of the test has a score that is less than 16 The probability of a student scoring less than 16 is? (Round to four decimal places as needed.) (b) Find the...
Suppose that the lifetimes of light bulbs are approximately normally distributed, with a mean of 57...
Suppose that the lifetimes of light bulbs are approximately normally distributed, with a mean of 57 hours and a standard deviation of 3.5 hours. With this information answer the following questions. (a) What proportion of light bulbs will last more than 62 hours? (b) What proportion of light bulbs will last 50 hours or less? (c) What proportion of light bulbs will last between 58 and 62 hours? (d) What is the probability that a randomly selected light bulb lasts...
please answer all three questions.
The monthly utility bills in a city are normally distributed, with a mean of $100 and a standard deviation of $16. Find the probability that a randomly selected utility bill is (a) less than $66, (b) between $81 and $90, and (c) more than $100. (a) The probability that a randomly selected utility bill is less than $66 is (Round to four decimal places as needed.)
The amounts a soft drink machine is designed to dispense for each drink are normally distributed, with a mean of 12.3 fluid Ounces and a standard deviation of 0.2 fluid Ounce. A drink is randomly selected. (a) Find the probability that the drink is less than 12.2 fluid Ounces. (b) Find the probability that the drink is between 12 and 12.2 fluid Ounces. (c) Find the probability that the drink is more than 12.6 fluid Ounces. Can this be considered...
In a recent year, the scores for the reading portion of a test were normally distributed, with a mean of 20.2 and a standard deviation of 5.4. Complete parts (a) through (d) below. (a) Find the probability that a randomly selected high school student who took the reading portion of the test has a score that is less than 16. The probability of a student scoring less than 16 is . (Round to four decimal places as needed.) (b) Find...
The monthly utility bills in a city are normally distributed, with a mean of $100 and a standard deviation of $14. Find the probability that a randomly selected utility bill is (a) less than $65, (b) between $87 and $100, and (c) more than $110. (a) The probability that a randomly selected utility bill is less than $65 is _______ (Round to four decimal places as needed.) Use the normal distribution to the right to answer the questions. (a) What percent of the...
Assume the random variable x is normally distributed with mean u = 80 and standard deviation c=5. Find the indicated probability. P(65<x< 73) P(65<x< 73)=0 (Round to four decimal places as needed.) X 5.2.17 Use the normal distribution of SAT critical reading scores for which the mean is 507 and the standard deviation is 122. Assume the vari (a) What percent of the SAT verbal scores are less than 550? (b) If 1000 SAT verbal scores are randomly selected, about...
my C Cour The times per week a student uses a lab computer are normally distributed, with a mean of 5.9 hours and a standard deviation of 1.4 hours. A student is randomly selected. Find the following probabilities. Anno (a) Find the probability that the student uses a lab computer less than 4 hours per week. (b) Find the probability that the student uses a lab computer between 6 and 8 hours per week. (c) Find the probability that the...
Suppose that the lifetimes of light bulbs are approximately normally distributed, with a mean of 57 hours and a standard deviation of 3.5 hours. With this information answer the following questions. (a) What proportion of light bulbs will last more than 62 hours? (b) What proportion of light bulbs will last 50 hours or less? (c) What proportion of light bulbs will last between 58 and 62 hours? (d) What is the probability that a randomly selected light bulb lasts...
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