collected data on the cost of computers at best buy shows that 95% of the prices are between what two values? the is of the data is $750 with a standard deviation of $125

Q: The descriptive measure of dispersion that is based on the concept of a deviation about the mean is…

A: Range : Range is the measure of dispersion. It is the difference between minimum value and maximum…

Q: The time students take to complete an exam follows a uniform distribution and is between 35 minutes…

A: Given data: The time students take to complete an exam follows a uniform distribution. a = 35 b = 60

Q: In an Algebra class, the scores on a test are normally distributed. The middle 68% of the scores…

A: The empirical rule states that if X is a random variable where; X~Normal(μ,σ2) Then;…

Q: Jim  figures that it takes an average of 17 minutes with a standard deviation of 3 minutes to drive…

A:

Q: At a local college, 800 incoming freshmen take a placement test for mathematics. This test scores…

A:

Q: Time in surgery: Records at a hospital show that a certain surgical procedure takes an average of…

A: (1) Let X be the random variable from Normal distribution with mean (μ) = 172.6 and standard…

Q: Renee scores an average of 159 points in a game of bowling, and the points are normally distributed.…

A:

Q: Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores…

A: Let "x" be the IQ score of adults Find z-value: Since the total area under the normal curve is 1.…

Q: A national achievement test is administered annually to 3rd graders. The test has a mean score of…

A: The formula of Z score is ,  z = x - μσ

Q: O Sign CAA - 2) Which graph represents a bigger standard deviation value? A) B)

A:

Q: A national secondary achievement test is administered annually to high school students. The test…

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Q: The distribution of the weights of patients at a local urgent care clinic is Normal, with a mean of…

A: a) The probability that  is equal to the blue area under the curve. Since μ = 150, σ = 10.6…

Q: *. The mean IQ is 100 points with a standard deviation of 15 points. a) What percent of the…

A: From the provided information, Mean (µ) = 100 Standard deviation (σ) = 15 X~N (100, 15) Here X is…

Q: Victor Fries watches a morning news show, where he hears that the mean cost of a refrigerator repair…

A:

Q: Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores…

A: It is given that the IQ Scores of adults are normally distributed with a mean of 100 and a standard…

Q: SAT scores have a mean of 1000 and a standard deviation of 100. ACT scores have a mean of 20 and a…

A: Solution:Given data: SAT score, μ =1000mean score                                            x…

Q: Ngan scored 1 standard deviation below the class average on a statistics exam. The class average was…

A:

Q: The annual salaries of employees in a large company are normally distributed with a mean of $55,000…

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Q: What does it mean if the standard deviation of a given score is high? a) the scores are very low…

A: We know that,  For the normal distribution,  Z =( X- μ) /σ We can say that,   if the standard…

Q: On a test the mean score is 25 and the standard deviation is 2.3.  Which score could be expected to…

A: Mean =25 s = 2.3 z-critical value at alpha 0.05 is 1.65

Q: The graph shows the distribution of the number of text What percentage of young adults send between…

A: GivenMean(μ)=28standard deviation(σ)=30

Q: In an Algebra class, the scores on a test are normally distributed. The middle 68% of the scores…

A: According to Empirical rule (68-95-99.7 rule) Given that the middle 68% of the scores fall…

Q: In a large sample of customer accounts, a utility company determined that the average number of days…

A: Empirical rule: About 68% of data lies within the first standard deviation of the mean. About 95%…

Q: Find the indicated IQ score. The graph to the right depicts IQ scores of​ adults, and those scores…

A: Given : The graph to the right depicts IQ scores of​ adults, and those scores are normally…

Q: A normal distribution of test scores has a mean of 38 and a standard deviation of 6. What percent of…

A: The distribution of X is given as, X~N(µ=38, σ=6).

Q: The weights of the native North American Blue Jay have a mean of 18.4 ounces with a standard…

A:

Q: A recent survey revealed that an American's Christmas spending averaged $1,150. Suppose Americans'…

A: Given that, μ=$1150,σ=$310 Consider that 5% of Americans will spend more than this dollar amount on…

Q: One year, the SAT verbal test had scores with a mean of 500 and a standard deviation of 100. SAT…

A: As in the given problem the data is normally distributed, so by using the Z-table I am going to…

Q: A successful basket ball player has a height of 6 feet 4 inches. Based on statistics his height…

A: As given, The basketball player has a height of 6 feet 4 inches and when his height is converted to…

Q: A data set of employee salaries has an average of $60,000 with a standard deviation of $5,000. You…

A: Given that, Mean = $60000 Standard deviation = $5000

Q: % of the data within 2 standard deviations. Given a set of data that is bell-shaped there is…

A: According to the Empirical Rule (also called the 68-95-99.7 Rule), for bell shaped data we say that…

Q: Using Chebyshev's rule, at least what percent of the distribution lies between 3 standard deviations…

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Q: thave shout One year, the SÁT verbal test had scores with a mean of 500 and a standard deviation of…

A:

Q: IQ scores have a mean of 100 and a standard deviation of 15. Mike has an IQ of 109. a) What is the…

A: See the handwritten solution

Q: What is the value for a score that has a z= +1.5 from population with a mean of μ=30 and a standard…

A: Z score = +1.5 Mean = 30 Standard deviation = 6

Q: In a large sample of customer accounts, a utility company determined that the average number of days…

A:

Q: review(16a): The amount of jens monthly phone bill  is normally distributed  with a mean score of…

A: In question, given that The amount of jens monthly phone bill  is normally distributed  with a mean…

Q: The mean temperature in Amman for the month of October is 23 degrees with a standard deviation of…

A:

Q: Find the indicated IQ score. The graph to the right depicts IQ scores of adults doors, and those…

A: Here we need to find the indicated iq score.

Q: In an Algebra class, the scores on a test are normally distributed. The middle 68% of the scores…

A: In an Algebra class, the scores on a test are normally distributed. The middle 68% of the scores…

Q: Find the indicated IQ score.

A: Let X denote the IQ scores of adults. Given that X follows N(mean = 100, SD = 15)

Q: The scores on a standardized test are normally distributed with a mean of 95 and standard deviation…

A: According to the given information, we have Given that the distribution is normal. Mean = 95…

Q: The mean SAT score for 13 male highschool students is 500 and the standard deviation is 100. the…

A: Let us denote the group of males as 1st sample and group of females as 2nd sample. Hypotheses for…

Q: 0.75

A: Given X is normal Distributed with mean µ = 100.0 and standard deviation σ = 15.0 now will use…

Q: The typical amount of sleep per night for college graduate students has a normal distribution with a…

A:

Q: The cholesterol levels of a group of young women at a university are normally distributed, with a…

A: Mean = 184 Standard deviation = 37

Q: what is the z score for a person who received an SAT mathematics score of 685?

A: Here Given, The mean mathematics score for seniors who took the SAT in 2018 was 531. If the standard…

Q: Renee scores an average of 198 points in a game of bowling, and the points are normally distributed.…

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: In an Algebra class, the scores on a test are normally distributed. The middle 68% of the scores…

A: Given information middle 68% of the scores fall between 69 and 81 As per empirical rule 68% of data…

Q: Some managers of companies use employee rankings to laud the best and let go of the worst. Suppose…

A:

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.