Using the 40 chocolate chip counts for the Chips Ahoy cookies, the mean is 24.0 chips and the standard deviation is 2.6 chips. a) Use the range rule of thumb to find the minimum and maximum “usual” numbers of chips. Minimum usual = Maximum usual = b) Would a cookie with 30 chocolate chips be “unusual”? Why? c) Based on Empirical rule, about % of all values fall within 18.8 chips and 29.2 chips. Why? About % of all values fall within 16.2 chips and 31.8 chips. Why?

Q: A) A bell-shaped distribution has a mean ?=1200 and standard deviation ?=340.  Find the proportion…

A: Theoretical distribution is a branch of a frequency distribution. The theoretical distribution…

Q: The Pew Internet and American Life Project surveyed 2227 adults in 2011, asking them about their…

A: It is given that the mean number of text messages sent per day is 40.9 for men, 42.0 for women. The…

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: Imagine that every elementary school in California is measured on several characteristics and then…

A:

Q: According to the data from the National Health Survey, the height of all adult American women are…

A: The score is calculated below:

Q: What is the z score for 20 if mean =28 and stadnard deviation =6

A: The z-score of a random variable x is defined as follows: z = (x – µ)/σ. Here, µ and σ are the mean…

Q: A survey found that​ women's heights are normally distributed with mean 63.4 in. and standard…

A: a.   Obtain the percentage of women meeting the height requirement. The percentage of women meeting…

Q: Psychological and educational tests, including MMPI are often designed so they have a mean of 50 and…

A: Given that  They have a mean of 50 and a standard deviation of 10.

Q: What is the standard deviation of the data set 14,23,9,12,21,18,8

A:

Q: Calculate the means and standard deviations of:1, 2, 3, 4, 5

A: We have to calculate the mean and SD of given observations. The observations are  X : 1, 2, 3, 4, 5

Q: A survey found that​ women's heights are normally distributed with a mean62.2in. and standard…

A: It was stated that a survey found that​ women's heights are normally distributed with a mean62.2in.…

Q: a. Find the percentage of women meeting the height requirement. Are many women being denied the…

A: Given, μ= 63.6  σ= 2.5

Q: The height of men is normally distributed, with a mean of 69.0 inches and a standard deviation of…

A: From the provided information,The mean and standard deviation of women's height are as…

Q: Suppose the average golfer drives the ball around 259.1 yards with a standard deviation of 9.73.…

A: Solution

Q: The height of men is a normally distributed variable with a mean of 68 inches and a standard…

A: Mean(μ)=68Standard deviation(σ)=3

Q: nd the mean and the median of the contents. he third value was incorrectly measured and is actually…

A: Given See the handwritten solution

Q: If the distribution of scores were normally distributed, the following would be true? -Mean = 36.5,…

A: Answer : - Given, the distribution of scores were normally distributed.                   Find the…

Q: What is the formula for calculating the standard deviation of a set of n observations?

A: Introduction The standard deviation is one of the measures of variability.

Q: Suppose that another sample of resting heart rates for five Math students was obtained: 72, 68, 66,…

A: From the given data we want to know the data value .

Q: 24. Suppose annual salaries for sales associates at Target have a mean of $32,500 and a standard…

A: According to the provided information, Mean (μ) =$32500 Standard Deviation (σ) = $2500

Q: based on this graph, would the median be greater than the mean? or the mean gretaer than the median?…

A: Here data is negatively(right) skewedmore data at higher end

Q: Approximately, what percentage of data lies within two standard deviations from the mean?

A: Empirical rules:1) P(μ-σ<x<μ+σ)=68%2) P(μ-2σ<x<μ+2σ)=95%3) P(μ-3σ<x<μ+2σ)=99.7%

Q: 14) Find the score that separates the top 80% from the bottom 20% if the Mean is 100 and the…

A: Given information Mean (µ) = 100 Standard deviation (σ) = 26 The score that separates the top 80%…

Q: 10) The weights of a large population of male students have a mean of 160 pounds with a standard…

A: Solution

Q: A survey found that women's heights are normally distributed with mean 63.8 in and standard…

A: From the provided information, Mean (µ) = 63.8 in Standard deviation (σ) = 2.4 in Let X be a random…

Q: The Sum of Squared Errors for a data set of 18 numbers is 64. What is the standard deviation?

A: Given thatThe sum of squared errors of data set (SS) = 64Number of data values in data set (n) =…

Q: During a quality assurance check, the actual contents (in grams) of six containers of protein powder…

A: Given: n = 6 Formula Used: Mean = ∑Xin Median = 2(n+1)4thterm

Q: Imagine that every elementary school in California is measured on several characteristics and then…

A: From the provided information, Mean (µ) and standard deviation (σ) of the school in Los Angeles…

Q: The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The…

A: Empirical rule is given below;

Q: The height of men is a normally distributed variable with a mean of 68 inches and a standard…

A: Mean(μ)=68standard deviation(σ)=3

Q: ore is needed to be in the top 8%? Mean is 90 Standard Deviati

A: Let the left area of the normal curve is denoted by -z* and the right area of the curve by z*. Now,…

Q: The latest available data showed health care spending were $8086 per person in the United States…

A: Givenpopulation mean = $8086population standard deviation = $2500sample size = 100Health care…

Q: Compute standard deviation for the following data : 5, 8, 7, 11, 9, 10, 8, 2, 4, 6.

A:

Q: According to the U.S. Census, the average adult woman is the United States is 65 inches tall and the…

A: Given X is normal Distributed with mean µ = 65.0 and standard deviation σ = 3.0 Need to find Z score…

Q: What is the SD of a distribution if the mean is 4.5 and a z score of 3.5 corresponds to a raw score…

A: GIVEN DATA, μ=4.5z score =3.5raw score =x=15standard deviation =σ=?

Q: Suppose that water usages in American showers are normally distributed, with an average shower using…

A: We have given that,  X be the random variable from normal distribution with mean (μ) = 16.4 and…