22. A six-year study in a certain country found that birth weights of newborns were normally distributed, with a mean of 3758 grams and a standard deviation of 496 grams. What is the z-score for a newborn weighing 3000 grams? A)-1.5 B) -0.9 C)-1.7 D)-1.2

Q: 3. The weight of a regular bag of new powdered milk are normally distributed with mean 500 grams and…

A: We have given that.   X~N( μ , ?^2 )   μ =500, ? =?   Z-score =( x - μ )/?

Q: 4. Consider that in a population of Filipino adults ages 18 to 65, Body Mass Index (BMI) is normally…

A: Given: X~N(μ,σ)μ=28σ=6

Q: Consider a sample with a mean of 500 and a standard deviation of 100. What are the z-scores for the…

A: The mean is 500 and the standard deviation is 100.

Q: what is the z-score of a value of 32 of a set A, given that the set has a mean of 24 and a standard…

A: The answer is found in step-2

Q: 3. To compare the braking distances for two types of tires, a safety engineer conducts 35 braking…

A:

Q: 7.) Assume that the speed of automobiles on an expressway during rush hour is normally distributed…

A:

Q: 2) The annual salaries of employees in a large company are approximately normally distributed with a…

A: Obtain the percent of people earn less than $40,000. The percent of people earn less than $40,000 is…

Q: 9.16 A bottled water distributor wants to determine whether the mean amount of water contained in…

A:

Q: 1. The time spent in freefall in when skydiving is normally distributed with a mean of 20 seconds…

A:

Q: 4. Distribution of heights of elderly English women is known to be normal with a mean height of 160…

A: As per Bartleby guideline expert have to answer first question three subpart only dear student…

Q: A motor club wishes to estimate, to within five cents, the mean price of a gallon of gasoline in a…

A: Given information: A motor club wishes to estimate to within five cents. ME=5 Population standard…

Q: 2. Given a standard deviation of 3.7, what is the mean if1 0% of the population has a distribution…

A: We have given that,  Let x be the random variable from normal distribution with standard deviation…

Q: 27. A company finds that the useful life of its computers is normally distributed with a mean of 3.5…

A: X: Useful life of computer Given:

Q: Suppose, according to a 1990 demographic report, the average U. S. household spends $90 per day.…

A:

Q: 3. The amount dispensed by the coffee machine follow the normal distribution with a mean of 5,286…

A:

Q: 17:22. The mean height of 50 male students who showed above average participation in lege athletics…

A:

Q: 7. A researcher wants to estimate the mean income of all physicians in a city at a 95% confidence…

A: Given,standard deviation(σ)=17500margin of error(E)=5000α=1-0.95=0.05α2=0.025Z0.025=1.96    (from…

Q: 4. A researcher claims that the standard deviation of the numberof deaths annually from typhoons in…

A:

Q: 9. Suppose only the top 20 % of marks on a university entrance exam qualifies an application for…

A: Here we can use normal distribution to find the minimum marks to be in top 20%. If x are minimum…

Q: 7. The City Transport and Traffic Management Office (CTTMO) study of 8000 vehicles that passed the…

A: Given: The City Transport and Traffic Management Office (CTTMO) study of 8000 vehicles that passed…

Q: 4-A health maintenance organization (HMO) wants to estimate the mean length of a hospital stay. How…

A: The random variable length of a hospital stay follows normal distribution. The margin of error is…

Q: 4.The lengths of trout in a certain lake are normally distributed with a mean of 7 inches and a…

A: For Normally distributed data, mean and standard deviation have given. Minimum size of sample…

Q: Assume that the heights of men applying for military academy training are normally distributed with…

A:

Q: 4. In studying ocean conditions, the Bureau of Fisheries found that for one location, the August…

A: Given ,Mean μ = 83.6Standard deviation σ=24Let  x be temperature normally distributed

Q: a) Between what two values would you expect to find about 95% of the lead actresses ages, based on…

A: Given, Meanμ= 29.6 Standard deviationσ = 6.4 Let popular actress Reese Witherspoon's age be x x = 36…

Q: 1. Assume that the IQ scores of SHS students in The College of Maasin follow a normal distribution…

A:

Q: Suppose that the scores on a statewide standardized test are normally distributed with a mean of 67…

A: From the provided information, Mean (µ) = 67 Standard deviation (σ) = 6 Let X be a random variable…

Q: director

A:

Q: 1- Applying for a specific job requires obtaining the mark of 500 in the contest exam. If 16 persons…

A:

Q: 3. The length of a football field is normally distributed with a mean of 100 m and a standard…

A: Mean =100 sd = 3

Q: Suppose that employees at a large company have salaries that are normally distributed, with a mean…

A: We have given that, Let X be a random variable i.e. salaries of employees are normally distributed…

Q: Suppose that the amount of time that takes place for the Bureau of Internal Revenue(BIR) to send…

A:

Q: 4. The lengths of trout in a certain lake are normally distributed with a mean of 7 inches and a…

A:

Q: 4.15. If the local restaurants in a small town record an average of 92 customers a day, with a…

A:

Q: For a normally distributed data set with mean 20 and standard deviation 4.  According to the…

A: Solution-: Given: μ=20,σ=4 We want to find what percentage of the data lies between 8 and 32?

Q: 4. On a standardized test, scores are normally distributed with a mean of 400 and a standard…

A: GivenMean(μ)=400standard deviation(σ)=80

Q: 2. A university dean wishes to estimate the average number of hours his part-time instructors teach…

A:

Q: c. Analyzing delivery records for 18 customers from "Jalwa" tailoring company, you found their mean…

A: Hypothesis test used estimate whether there is any mean significant difference between the sample…

Q: 6.23 The marks for 1000 applicants in a college ad- mission test are approximately normally…

A:

Q: 1. There are 95% of students at school weigh between 62 kg and 90 kg at Westchester Community…

A: 95% of the data lies between X¯-1.96×σ and X¯+1.96×σ hence we get, X¯-1.96×σ = 62 X¯+1.96×σ = 90…

Q: 2) If the readings on thermometers are normally distributed with a mean of 0°C and a standard…

A: The mean and standard deviation are μ=0,σ=1 The p-value is 5% from left or 0.05 The z-score for the…

Q: # 6- A set of data items is normally distributed with a mean of 90 and a standard deviation of 5.…

A:

Q: 1. The test scores in MAT 152 are normally distributed with a mean of 95 and a standard deviation of…

A:

Q: 3- At a computer manufacturing company, the actual size of a particular type of computer chips is…

A: We have to find required sample mean.

Q: 4. A line for tickets to a local concert had an average (mean) waiting time of 20 minutes with a…

A:

Q: 4. A normally distributed set of 1,010 values has a mean of 103 and a standard deviation of 12.…

A:

Q: Consider a data set that has a mean of 16.8 and a standard deviation of 5.6. According to…

A: Given,          Mean μ =16.8          standard deviation σ=5.6    given interval has atleast 93.7%…