Assume the annual day care cost per child is normally distributed with a mean of $7000 and a standard deviation of $500. In a random sample of 120 families, how ma pay more than $6355 annually for day care per child?

Q: If a population has a standard deviation σ of 36 units, what is the standard error of the mean if…

A: The population standard deviation is 36.

Q: Of a large group of men 5 per cent are under 60 inches in height and 40 per cent are between 60 and…

A:

Q: If a sample has a mean of 100 and a standard deviation of 6, what is the value in the data set that…

A:

Q: if heights of 3rd graders follow a normal distribution with a mean of 52 inches and a standard…

A:

Q: Suppose that the cost of annual tuition at colleges is normally distributed, with an average annual…

A: Denote X as the cost of annual tuition at colleges. It is given that X is normally distributed, with…

Q: If the average mid twenties male weighs 169lbs. and a weight of 150 is in the 31st. percentile, what…

A: We are given,Mean = μ = 169X = 150Percentile = 31st

Q: An entrance examination is to be conducted to 1600 ncoming freshmen students at Gordon college which…

A: Let X be the variable denoting score of the exmination. X ~ N (μ, σ) Given mean, μ = 85 standard…

Q: In a survey sample of 83 respondents, the mean number of hours worked per week is 39.04, with a…

A: The sample size is 83, mean is 39.04, and standard deviation is 11.51.

Q: Statewide, the average score on the verbal portion of the college entrance exam is 453, with a…

A: From the provided information, Sample size (n) = 137 Sample mean (x̅) = 502 Population standard…

Q: In a normally distributed data set with a mean of 22 and a standard deviation of 4.1, what…

A: According to the given information, we know that The distribution is normal. Mean = 22 Standard…

Q: Assume the speed of vehicles along an open stretch of a certain highway in Texas that is not heavily…

A: It is given that mean is 71 and standard deviation is 3.125.

Q: They select a random sample of 101 recent college graduates and find a sample mean hourly wage of…

A:

Q: If a one-person household spends an average of $62 per week on groceries, find the maximum and…

A: GivenMean(μ)=62standard deviation(σ)=10

Q: An employer claims that full time employees have a mean income of $35,000. A sample of 200 employees…

A: From the provided information, The hypotheses can be constructed as: Null hypothesis: H0: µ =…

Q: A highway study of 8000 vehicles that passed by a checkpoint found that their speeds were normally…

A: Answer - A highway study of  N = 8000 vehicles that passed by a checkpoint found that their…

Q: Given a mean of 1,500 and a standard deviation of 53, calculate the value that is 2 standard…

A: Given that, Mean = 1500 Standard deviation = 53

Q: Suppose that monthly rental rates for unfurnished one-bedroom apartment in Springfield are…

A: Let X denote the monthly rental rates for unfurnished one-bedroom apartment in Springfield are…

Q: The mean speed of a sample of vehicles along a stretch of highway is 64 miles per​ hour, with a…

A: Given, μ=64σ=4P(52<X<76)=?

Q: Assume the salaries of elementary school teachers in the US are normally distributed with a mean of…

A: We bave to find given probability.

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

A: Given that, Mean, mu= 28 And standard deviation, sigma= 6 P(X=x)= 20% = 0.20 We know that,  Z score=…

Q: Given a distribution with a mean of 70 and a standard deviation of 62, find a value with a z-score…

A:

Q: The heights of 100 high school students are measured, with a mean of 175 cm and a standard deviation…

A:

Q: A trucking company determined that the distance traveled per truck per year is normally​…

A: Given information- Mean weight of the bears, µ = 80 thousand miles Population standard deviation, σ…

Q: The amount of time that people spend at Grover Hot Springs is normally distributed with a mean of 62…

A: Given: μ=62 minutesσ=18 minutes

Q: If the average salary of a computer programmer is $71, 800 with a standard deviation of 13, 000,…

A: I am attaching image so that you understand each and every step.

Q: Suppose that the distance of fly balls hit to the outfield (in baseball) is normally distributed…

A:

Q: Suppose the durations of human pregnancies follow a mound-shaped distribution with a mean of 266…

A:

Q: If the weekly grocery expenditure of households in a certain urban market is known to be normally…

A:

Q: The distribution of average speeds of the top 53 drivers in NASCAR is (25) roughly symmetric,…

A: Given data, Mean=184.8 sd=7.2 P(170.4<X<177)=?

Q: Suppose the distribution of typing speeds in words per minute for experienced typists can be…

A:

Q: suppose the heights of 18-year-old men are approximately normally distributed, with mean 73 inches…

A:

Q: A trucking company determined that the distance traveled per truck per year is normally distributed,…

A: A normal distribution is a continuous type probability distribution.It is also known as a…

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 cost of annual tuition at colleges is normally distributed, with an average annual…

A:

Q: A highway study of 8000 vehicles that passed by a checkpoint found that their speeds were normally…

A: Hi! Thank you for the question As per the honour code, We’ll answer the first question since the…

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: For a recent 10k​ run, the finishers are normally distributed with mean of 56 minutes and a standard…

A: Given data,μ=56σ=13P(45<X<70)=?

Q: A firm’s marketing manager believes that total sales for next year will follow the normal…

A: Given information- Population mean, µ = $3200,000 Population standard deviation, σ = $250,000 We…

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 263 days…

A:

Q: The standard deviation of the distribution of sample means would be equal to:

A: The standard deviation of the distribution of sample means would be equal to ?

Q: The Virginia Cooperative Extension reports that the mean weight of yearling Angus steers is 1152…

A: Given information- Population mean µ = 1152 pounds Standard deviation σ = 84 pounds We have given…

Q: The daily sales at a convenience store have a mean of $1280 and a standard deviation of

A: As given, the daily sales at a convenience store have a mean of $1280 and a standard deviation of…

Q: Jessica, the owner of a medium-scale native handicrafts shop, knows from experience that the time…

A:

Q: m and 5.50 m. What is the standard deviation

A: Introduction: The Standard Deviation in descriptive statistics is the degree of dispersion or…

Q: The amount paid for a particular model car is normally distributed with a mean of $15,300 and a…

A:

Q: Suppose that the average height of men in the United States is approximately normally distributed…

A: From the provided information, Mean (µ) = 70 Standard deviation (σ) = 4 X~N (70, 4) Here X be a…

Q: Toby's Trucking Company determined that on an annual basis, the distance traveled per truck is…

A: It is given that the mean and standard deviation are 50,000 and 12,000.

Q: If the foot length of women follows a normal distribution and 95% of women have a foot length…

A: Given data: If the foot length of women follows a normal distribution 95% of women have a foot…

Q: height for adult males in the U.S is about 70 inches and the standard deviation is about 3 inches.…

A: Given: Mean, μ=70 Standard deviation, σ=3 X~N (μ, σ)X~N (70, 3) The formula of empirical rule is as…

Q: In a distribution with a mean of 80 and a standard deviation of 8, what percentage of number would…

A: a. The mean is 80, and standard deviation is 8. The percentage of number would be less than 64 or…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.