The credit card balances on 1,000 accounts at the Jefferson Valley Bank have a mean of $760 and a standard deviation of $120. The distribution is approximately bell-shaped. Approximately what z-score corresponds to a balance of $350 and is this an unusually low balance (outlier)?

Q: percentage of," 2013). Consider a group of 200 people. Find the mean and the standard deviation of…

A: Let a random experiment be performed repeatedly. Let the occurrence of an event in a trial is called…

Q: At the shot put event the mean was a throw of 44.22 feet, with a standard deviation of 3.65 feet.…

A:

Q: According to a recent survey, the salaries of assistant professors have a mean of $40,756 and a…

A: Determine the Z score for the random variable X equals 45,000. The Z score for the random variable…

Q: n the state of Ohio, data has shown that 9% of adults are illiterate (lack basic reading and writing…

A: Solution: Given information: n1=300 Sample size of adults from Alabama n2=250 Sample size of adults…

Q: Assume that the mathematics score on the SAT are normally distributed with a mean of 500 and a…

A: Given

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A: The Normal distribution is also called as the Gaussian distribution. It is the most common…

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A:

Q: A standardized measure of achievement motivation is modeled by a normal distribution with a mean of…

A: Obtain the achievement score The achievement score is obtained below as follows:

Q: According to a recent survey, the salaries of assistant professors have a mean of $41,750 and a…

A: To get the proportion of professor who earn more than $48,000 we proceed as follows…

Q: Assume that the mathematics scores on the SAT are normally distributed with a mean of 500 and a…

A:

Q: A successful basketball player has a height of 6 feet 8 ​inches, or 203 cm. Based on statistics from…

A: Consider X is a random variable defined as the height of a successful basketball player.The provided…

Q: video game c

A: given, sample size(n) = 1500 sample mean (x̄) = 115 sample stadard deviation (s) = 11

Q: Suppose the amount newly married couples spend per week on groceries is normally distributed with a…

A: given data, normal distribution μ=65σ=4.3the amount (in dollars) spent on groceries representing the…

Q: A flu test shows that about 31% of 90 patients visited hospital in the first week of January had…

A: Given that  n = 90 , p = 31% = 0.31 , q = 1 - p = 1 - 0.31 = 0.69 X ~ Binomial (n = 90 , p = 0.31) X…

Q: The mean rate for cable t.v.from a sample of 80 households was $29 per month with a standard…

A:

Q: A study has shown that 15% of all college textbooks have a price of $178.52 or higher.  It is known…

A: From the provided information Standard deviation (σ) = $32.55 Let X be a random variable which…

Q: Suppose phone bills have a mean of $78 and a standard deviation of $8. How much would a phone bill…

A:

Q: he average height for a man in California was 177 cm in 2021. If height follows a normal…

A: given data, normal distribution, μ=177σ=10p(180<X<190)=?

Q: The cruising altitudes for the fleet of one commercial airliner are normally distributed with a mean…

A: It is given that the mean is 34,950 and the standard deviation is 1,800.

Q: A standardized test has a pop. mean of 152 and a standard deviation of 16. Molly scores at the 91st…

A:

Q: amount of honey produced by local beekeepers is normally distributed with a mean of 140 pounds and a…

A: given data, normal distribution mean=140standard deviation=31smallest amount in the top 14% produced…

Q: Suppose that prices of recently sold homes in one neighborhood have a mean of $265,000 with a…

A: For the distribution of the price of the recently sold homes, the parameters are specified as…

Q: Over roughly the past 100​ years, the mean monthly April precipitation in​ Williamstown,…

A: given data normal distributionμ = 3.6 inchesσ = 1.6 inchesfor x = 8.4 inchesZ =?

Q: According to a recent survey, the salaries of assistant professors have a mean of $41,750 and a…

A:

Q: Assume that the mathematics scores on the SAT are normally distributed with a mean of 500 and a…

A:

Q: Suppose that you are an elementary school teacher and you are evaluating the reading levels of your…

A: Solution

Q: 500 freshmen at Arundel University took part in a math comprehension test. The scores were normally…

A: From the provided information, Mean (µ) = 75 Standard deviation (σ) = 7 Let X be a random variable…

Q: On a nationwide math test, the mean was 72 and the standard deviation was 7. If Roberto scored 90,…

A: Given that, Mean = 72 Standard deviation = 7

Q: For a social club, the members had a mean age of 68 and a standard deviation of 10 years.  What is…

A: The mean is 68 and the standard deviation is 10.

Q: In one town, the number of pounds of sugar consumed per person per year has a mean of 6 pounds and a…

A: In one town, the number of pounds of sugar consumed per person per year has a mean of 6 pounds and a…

Q: what is the value of the standard deviation of the weekly earnings of the bus drivers?

A: Let X be the random variable for the weekly earnings of bus drivers.Given that,Population mean

Q: The mean value of land and buildings per acre from a sample of properties is $11,800, with a…

A: The objective of this question is to find the range of values within which approximately 99.7% of…

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A:

Q: The weekly mean income of a group of executives is $1,000 and the standard deviation of this group…

A:

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.