Assume the hold time of callers to a cable company is normally distributed with a mean of 3.2 minutes and a standard deviation of 0.6minute. Determine the percent of callers who are on hold for more than 3.2 minutes.

Q: Suppose that the quarterly sales levels among the health care information systems companies are…

A: Given that the mean of 8 million dollars and a standard deviation of 1.2 million dollars.  μ=8σ=1.2…

Q: The length of human pregnancies from conception to birth approximates a normal distribution with a…

A: Let X be length of time marks the longest 2.16 % of all pregnancies from normal distribution with…

Q: The mean incubation time of fertilized eggs is 23 days. Suppose the incubation times are…

A: To compute the 11-th percentile means, we need to find the z-score associated with the respective…

Q: Assume that a set of test scores is normally distributed with a mean of 110 and a standard deviation…

A: Empirical rule of probability:- Approx. 99.7% of the data lies between ± 3 SD limit of mean μ  ±3 σ…

Q: The systolic blood pressure of 19-year-old women is normally distributed with a mean of 120 mmHg and…

A: According to the empirical rule,

Q: About what percent of the products last between 12 and 15 days?

A:

Q: Suppose a small paint manufacturing company has a daily production that is normally distributed with…

A: Solution: It is given that a small paint manufacturing company has a daily production that is…

Q: Suppose that the quarterly sales levels among health care information systems companies are…

A: Given Data: Let X represent the random variable Mean=9 Standard deviation=1.1 X~ Normal (9, 1.12)…

Q: Suppose that the quarterly sales levels among health care information systems companies are…

A: Given data,Mean μ=11sd      σ=1.2P(X<x)=20%x=?

Q: Assume the hold time of callers to a cable company is normally distributed with a mean of 5.2…

A: Mean, μ= 5.2 minutesStandard deviation, σ = 0.8 minute We have to find the percent of callers who…

Q: Assume that the number of pieces per bag has a mean of 72 with a standard deviation of 1.use the…

A: We have to find given probability by using emperical rule...

Q: The lengths of pregnancies are normally distributed with a mean of 280 days and a standard deviation…

A:

Q: Suppose that the quarterly sales levels among health care information systems companies are…

A: Given :  μ = 10 σ = 1.1

Q: Suppose that the quarterly sales levels among health care information systems companies are…

A: given data normal distribution μ = 12σ = 1.2

Q: The length of human pregnancies from conception to birth approximates a normal distribution with a…

A:

Q: mean number of customers arriving at a restaurant during a 15-minute period is 9. Find the standard…

A: Given that :   The mean number of customers arriving at a restaurant during a 15-minute period is 9.…

Q: A mechanical device has a wear out time distributed normally with a mean of 1100 hours and a…

A:

Q: Assume that women have heights that are normally distributed with a mean of 63.6 inches and a…

A:

Q: A vending machine is designed to dispense a mean of 7.8 oz of coffee into an​ 8-oz cup. If the…

A: Let X be the random variable from Normal distribution with mean (μ) = 7.8 and standard deviation (σ)…

Q: The mean length of one-year-old spotted flounder, in millimeters, is 127 with standard deviation of…

A:

Q: If an espresso machine out-pour is normally distributed with the mean of 0.9 ounces and standard…

A: Let  X be the random variable from normal distribution with mean (μ) = 0.9 and standard deviation…

Q: Suppose that the quarterly sales levels among health care information systems companies are…

A: Given data,Mean μ=9 million dollarssd     σ=1.1 million dollarsP(X<x)=15%x=?

Q: In a recent awards ceremony the age of the winner for the best actor award was 34 and the age of the…

A:

Q: Suppose that the quarterly sales levels among health care information systems companies are…

A: mean=8 standard deviation=1.1

Q: Suppose that the quarterly sales levels among health care information systems companies are…

A:

Q: Determine the sales level (in millions of dollars) that is the cutoff between quarters that are…

A: Suppose that the quarterly sales levels among health care information systems companies are…

Q: Determine the percent of callers who are on hold for more than 4.8 minutes.

A: Assume the hold time of callers to a cable company is normally distributed with a mean of 4.8…

Q: The lengths of a particular animal's pregnancies are approximately normally distributed with mean of…

A:

Q: Suppose that the quarterly sales levels among health care information systems companies are…

A: Given Information: Suppose that the quarterly sales levels among health care information systems…

Q: The mean gas mileage for cars driven by the students at Chillville High School is 28.0 miles per…

A:

Q: Suppose that the quarterly sales levels among health care information systems companies are…

A: Solution

Q: Assume that adults have IQ scores that are normally distributed with a mean of 100.3 and a standard…

A: Assume that adults have IQ scores that are normally distributed with a mean of 100.3 and a standard…

Q: A student will spend 15 hours average each week in class. If the standard deviation is 2 hours, what…

A: Given that mean=15 and standard deviation = 2 Let, X= number of hours spent by a student in the…

Q: Assume that the hourly cost to operate Saint-Martin Hyundai bus follows the normal distribution with…

A:

Q: What is the greatest amount of time that a newborn can sleep and still be in the bottom 75% of…

A: Let , X→N(μ=15.5 , σ=1.6) Our aim is to find the greatest amount of time that a newborn can sleep…

Q: hs of a particular animal's pregnancies are approximately normally distributed, with mean = 251 days…

A: Consider X be the random variable representing the time span of pregnancies.   X follows normal…

Q: Suppose that the quarterly sales levels among health care information systems companies are…

A: Given information- Population mean µ = 8 million Standard deviation σ = 1.1 million Z = -1.2816…

Q: Suppose that the quarterly sales levels among health care information systems companies are…

A: The objective of this question is to find the sales level that separates the bottom 15% of all…

Q: Assume that a set of test scores is normally distributed with a mean of 110 and a standard deviation…

A: Given: A set of test scores is normally distributed with a mean of 110 and a standard deviation of…

Q: A diastolic blood pressure level above 90 mm Hg is considered to be hypertension. What percentage of…

A: The random variable X is defined as the diastolic blood pressure levels in women which follows…

Q: Assume that the test scores for a large class are normally distributed with a mean of 64 and a…

A: Solution-: Given: We find P(the class received a higher score than 78)=?

Q: A manufacturer of bolts has a​ quality-control policy that requires it to destroy any bolts that are…

A: Given :Population mean length (  ) = 10 cm.Population standard deviation of length (  ) = 0.05 cm.

Q: Describe  the scores in a sample  that has a standard  deviation of zero

A: If the standard deviation is zero there will be no dispersion of scores from the Mean. It means that…

Q: Suppose that the quarterly sales levels among health care information systems coffi dollars and a…

A: Answer  Mean =12 standard deviation =1.3

Q: A mechanical device has a wear out time that is normally distributed with a mean of 1100 hours and a…

A:

Q: Assume the average amount of caffeine consumed daily by adults is normally distributed with a mean…

A: The detailed solution is as follows below:

Q: The lengths of a particular animal's pregnancies are approximately normally distributed, with mean =…

A: