Which graph shows a normal distribution of student heights with a mean of 170 cm and a standard deviation of 5 cm?

Q: College students, in general, have a mean of 60 and a standard deviation of 8 on a measure of…

A: Solution-: Let, X= The college students have loneliness scores  Given: We find,

Q: Suppose that the weights of candy bars vary according to a normal distribution, with mean of 62…

A: The question is about normal dist. Given : The mean weights of candy bars ( μ ) = 62 g The std.…

Q: The spread or dispersion of a set of data about the mean will be large if the standard deviation is…

A: Solution

Q: In a normal distribution approximately what percent of data items fall within 1Standard deviation of…

A: Data fall within one standard deviation

Q: On a standardized test with normal distribution, the mean is 85 and the standard deviation is 3.…

A: If 95% lies in the middle then (100-95)%=5% are on the two tails. So one tail has = 5%2=2.5%=0.025z…

Q: If the mean is zero and the standard deviation is one in a normal distribution, what type of normal…

A: We know that if the normal distribution has 2 parameters as mean, μ and standard deviation, σ, where…

Q: What is the standard deviation on the graph ?

A:

Q: A normal distribution has a mean of 100 and a standard deviation of 15. What is the median for this…

A: Given Mean μ=100, standard deviations σ=15

Q: The lengths of brook trout caught in a certain Colorado stream are normally distributed with a mean…

A: Given that :  Mean = 14 inches S. D = 3 inches Here we use standard normal distribution concept…

Q: Could the graph represent a variable with normal distribution? If so, what is the mean and what is…

A:

Q: In a normal distribution with a mean of 72 and a standard deviation of 12 what is the value of x at…

A: A normal distribution is also called Gaussian distribution which has bell shaped curve. The normal…

Q: The wind speeds throughout the month of April were normally distributed with a mean of 17 mph and a…

A: Given: Mean(μ)=17standard deviaion(σ)=4

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

A: The provided information is:

Q: Suppose that the distribution of scores on an exam is closely described by a normal curve with a…

A: we have a formula for calculating the percentile in case of normal curve  which is Mean+Z*standard…

Q: Which one of these graphs does not represent a normal distribution?

A:

Q: In which distribution shape does the Standard Deviation Rule apply?

A:

Q: A normal distribution has a mean of 62 and a standard deviation of 12. What is the median?

A:

Q: In 2019, the amount of money that motorists spent on gas had a normal distribution with a mean of…

A: Given Information Number of persons sampled (n) = 2400 Mean (µ) = 900 Standard deviation(σ) = 100…

Q: A study discussed that the percent purity of oxygen from a certain supplier yeilds a mean of 99.61%…

A: Given data; Mean = 99.6 Standard deviation = 0.08

Q: The mean of a normal set of data is -5.4 and the standard Deviation is 22.5 sketch a normal curve…

A: We have to plot a Normal curve with the given data  , Mean = -5.4 standard deviation = 22.5.

Q: The lengths of human pregnancies can be described by a Normal model with a mean of 268 days and a…

A:

Q: A normal distribution has a mean of 60 and a standard deviation of 20. Barbara's score is 40. What…

A: It is given that the Normal distribution has a mean 60 and a standard deviation of 20.  Suppose X be…

Q: A data set with roughly a bell-shaped distribution has mean 45 and standard deviation 12.…

A: The percentage of the observations lie between 33 and 57 is obtained below:Let X be an observation…

Q: A normal distribution has a mean of 10 and a standard deviation of 10. What is the number such that…

A: Given the distribution is normalMean = 10standard deviation = 10 The Z score for probability to its…

Q: The mean height of trees in the virgin forest of Zambales is 42 feet and the standard deviation is 3…

A: The mean height of trees in the virgin forest of Zambales is 42 feet and the standard deviation is 3…

Q: A bank loan officer rates applicants for credit. The ratings can be described by a normal model with…

A: Given: μ = ​200 σ = 50

Q: A normal distribution has a mean of 61 and a standard deviation of 15. What is the median?

A: Given, A normal distribution has mean of 61 and standard deviation of 15. Properties of normal…

Q: The playing life of a Sunshine radio has a Normal distribution with a mean of 600 hours and a…

A: The playing life of a radio is normally distributed with mean 600 hours and standard deviation of…

Q: When a distribution is bell-shaped, approximately what percentage of data values fall within 1…

A: We know that, the empirical rule which is also known as 68-95-99.7 rule.  The Empirical Rule finds…

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

A:

Q: Suppose a normal distribution has a mean of 50 and a standard deviation of 3. What is P(xs 53)?

A:

Q: Suppose x is a value in a normal distribution, with a mean of 12, and standard deviation of 4, What…

A: Given: x=4μ=12σ=4 The z score of x=4 is obtained as follows: Z=x-μσ=4-124=-84=-2 Thus, the z-score…

Q: If a normal distribution has a mean of 18.0 and a standard deviation of 1.2, what value is at the…

A: We have given that normal distribution has a mean of 18.0 and a standard deviation of 1.2.

Q: Assume that a nomral distribution has a mean of 22 and a standard deviation of 7. What percentage of…

A:

Q: In a study of 400 people, the mean age is 50 years and the standard deviation of age is 10 years.…

A:

Q: The quartiles of any distribution are the 25th and 75th percentiles. About how many standard…

A: 25th Percentile = P(Z <z ) = 0.25 For normal table  P(Z < -0.67 ) = 0.2514 Hence, 25th…

Q: A normal distribution has a mean of 148 and a standard deviation of 5. Find the z-score for a data…

A: Solution: Let X be the data value. From given information, X has mean µ=148 and a standard deviation…

Q: What relation exists between the average deviation of the mean?

A: Note: Hi there! Thank you for posting the question. As your question is not clear, as per the…

Q: In a distribution of the test grades with the mean of 25 and the standard deviation of 4, what would…

A: Given,mean(μ)=25standard deviation(σ)=4grade score(X)=32

Q: A normally distributed data set has a mean of 0 and a standard deviation of 2. What is the percent…

A: Here I am providing my handwritten solution

Q: Suppose that annual precipitation is normally distributed, with mean 50 inches, and standard…

A: Obtain the 65th percentile of the precipitation distribution. The 65thpercentile of the…

Q: A grade of 81 in a test in which the mean is 75 and the standard deviation is 12 corresponds to a…

A:

Q: In a normal distribution with a mean of 72 and a standard deviation of 12, what percentage of cases…

A: GivenMean(μ)=72standard deviation(σ)=12

Q: A distribution is known to be bell-shaped, with a mean of 82 and a standard deviation of 6. What…

A: Obtain the Z-score for the random variable X equals 76. The Z-score for the random variable X equals…

Q: In a county male height is normally distributed with a mean of 177 cm and a standard deviation of 6…

A:

Q: A normal distribution has a mean μ = 500 and standard deviation σ = 35. Approximately what percent…

A: GivenMean(μ)=500standard deviation(σ)=35

Q: College students, in general, have a mean of 60 and a standard deviation of 8 on a measure of…

A: According to the provided information, Mean (μ) = 60 Standard Deviation (σ) = 8