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: 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: Assume that the speed of automobiles on an expressway during rush hour is normally distributed with…

A: The detailed solution is as follows below:

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 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: Assume that the speed of automobiles on an expressway during rush hour is normally distributed with…

A: The required Percentage is, 3.6%  the detailed solution is as follows below:

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 weights of men in their 30s are normally distributed with a mean of 190 pounds and a standard…

A: From the provided information, Population mean (µ) = 190 pounds Population standard deviation (σ) =…

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 lengths of trout in a lake are normally distributed with a mean of 30 inches and a standard…

A: The z-score denotes how many standard deviations an individual raw score is away from the mean The…

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 banker finds that the number of times people use automated-teller machines (ATMs) in a year are…

A: Solution-: Given:μ=40,σ=11.2 We want to find  the proportion of customers who use ATMs between 30…

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: uppose the distribution of heights of a group of 200 children is normal with a mean of 150…

A:

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

A:

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: It was found that the cholesterol content of a bread is normally distributed with an average of 200…

A:

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

A:

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

A:

Q: (a) What proportion of rods has a length less than 29.9 cm? (Round to four decimal places as…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

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: Consider a one-factor ANOVA with n₁ = 3, n₂ = 3, n3 = 3, n42, n5 = 2 (a) How many possible…

A: (a)Given,consider a one-factor ANOVA with the number of possible comparisons are  with  groups.We…

Q: The length of pregnancies are normally distributed with mean of 268 days and a standard deviation of…

A: Given : Length of pregnancies = X  X is normally distributed  Mean of X = 268 days  Standard…

Q: During 1 week, an overnight delivery company found that the weights of its parcels were normally…

A: A normal distribution is called a standard distribution if; 1. 68% of the values of the random…

Q: banker finds that the number of times people use automated-teller machines (ATMs) in a year are…

A: We have given Mean(µ) = 40Standard deviations (σ) = 11.2X ~ N (µ, σ )= N(40, 11.2)

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

A: Solution

Q: A lightbulb is advertised as lasting 1000 hours with a standard deviation of 150 hours. Assume the…

A: It is given that the mean and standard deviation are 1,000 and 150, respectively.

Q: The data in a data set are normally distributed with a mean of 190 and a standard deviation of 30.…

A: ∗Mean μ=190    standard  deviation σ=30    X~N 190,30 we need to find,   PX<130+PX>250=P…

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 proportion of vehicles less than or equal to the speed limit?

A: Let , X→N(μ=71 , σ=8) Our aim is to find the proportion of vehicles less than or equal to the speed…

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

A: Given that.   X~N( μ , ?^2 )   μ=5.2    , ?=0.9   Z-score =( x - μ )/?

Q: The time required for an automotive center to complete an oil change service on an automobile…

A: the PDF of normal distribution is = 1/σ * √2π * e ^ -(x-u)^2/ 2σ^2standard normal distribution is a…

Q: A banker finds that the number of times people use automated-teller machines (ATMs) in a year are…

A: The mean is 40 and the standard deviation is 11.

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: Suppose that the quarterly sales levels among healthcare information systems companies are…

A: