The amount of time working CHS students work per week is approximately normally distributed with a mean of 18.5 hours and a standard deviation of 4.2 hours. a) what is the probability that a student works  between 10 and 15 hours? Show what the question is asking using a graph of the normal distribution, and then answer it. B) what is the third quartile point of hours worked? Show what the question is asking by using a graph of the normal distribution, and then answer it. Interpret the meaning of this value.

Q: #of Occupants 1 2 3 0.70 0.15 0.10 0.03 0.02 What is the mean number of occupants in a vehicle? 45…

A: given data, here data table and their probabilities are given we have to find out the mean for the…

Q: Calculate the value of a normal random variable representing the top 20% of an approximately normal…

A: Let X be the random variable from normal distribution with mean (μ) = 100 and standard deviation (σ)…

Q: Based on the distributions in the picture belowe,  a. Which of the two distributions (With/Without…

A: a) The mean in With Intervention is larger than in Without Intervention as the mean for With…

Q: How many standard deviations away from the mean is a CD player that lasts 8 years? What is the…

A: Given Information: Mean μ=7.1 Standard deviation σ=1.4

Q: What is the mean time for athletes to be considered fully prepared? b. Calculate standard deviation…

A: Answer:- Given probability distribution table is,  Using formula,  Mean , E(X) = μ=∑xP(x).…

Q: HBO recently published a report detailing the watch-time of all its active users. It was identified…

A:

Q: Find the 60th percentile of the standard normal distribution and draw the bell curve( round to the…

A: we have to find 60 th percentile..

Q: Heights of women are normally distributed with a mean of 62.1 inches and a standard deviation of 2.3…

A: The probability that the height of a woman is more than 64.5 inches is 0.148363.Explanation:A normal…

Q: A mechanical component is subject to a load that has a mean value of 1500 N and a standard deviation…

A:

Q: Drying time for a certain type of glue follows a right skewed distribution with a mean of 4.3…

A:

Q: Composite scores on the American College Testing (ACT) college entrance exam follow the normal…

A: The following information has been given: Let X is a random variable shows the composite scores on…

Q: Heights of women are normally distributed with a mean of 62.1 inches and a standard deviation of 2.3…

A: 0.79562Explanation:The required probability is P(X<64) where X denotes the height of a woman.For…

Q: Define and explain the relevance of kurtosis, skewness and standard deviation as descriptive…

A: Kurtosis It is measure of tailedness Skewness It is measure of symmetry SD It is measure of…

Q: In a survey of a group of men, the heights in the 20-29 age group were normally distributed, with a…

A:

Q: 2. If a brisk walk at 4 mph burns an average of 300 cal per hour, find the probability that a person…

A: Given problem Given that   If a brisk walk at 4 mph burns an average of 300 cal per hour. Standard…

Q: The distribution of vitamin C amount in vitamin drops produced by a given factory is approximately…

A: X : Vitamin C amount in vitamin drops produced in a factory Given that, X ~ N(60,0.52) So, Z = X -…

Q: The number of pizzas consumed per month by university students is normally distributed with a mean…

A: Mean(μ)=11 standard deviation(σ)=3

Q: Multiple Choice 0.4015 0.0985 0.9015 -1286

A: Given Mean =76 Standard deviation =7

Q: Mean rent in a city is $500 per month with a standard deviation of $30. The rents are normally…

A:

Q: The term "Freshman 15" refers to the claim that college students typically gain 15 lb during their…

A: To find the probability that a randomly selected male college student gains 15 pounds or more during…

Q: Final exam scores in a Math class with large number of students have mean 146 and standard deviation…

A: The mean is 146 and the standard deviation is 8.4.

Q: Scores on the verbal ability portion of the Graduate Record Examination (GRE) follow a normal…

A: Let X be the verbal ability portion of the Graduate Record Examination (GRE) follow a normal…

Q: Identify if its true or false A normal distribution is symmetrical at the mean, i.e. the left side…

A:

Q: Resting body temperatures are normally distributed with an average of 98.25 degrees Fahrenheit and a…

A:

Q: The number of pizzas consumed per month by university students is normally distributed with a mean…

A: Let "X" be the number of pizzas per month by university students. Draw the normal curve and shade…

Q: A standard normal distribution has a mean of one and a standard deviation of three. True False

A: The standard normal distribution is a normal distribution with a mean of zero and standard deviation…

Q: he distribution of annual incomes for a group of supervisors in a certain region has a normal…

A: Empirical rule: According to empirical rule, 99.7% of data lies within three standard deviations of…

Q: A college entrance exam company determined that a score of 21 on the matnematics portion of the exam…

A: The t-test statistic is' t=x¯-μsnwhere x¯=sample mean            μ=population mean…

Q: Ques45)The first and third quartile of a normal distribution respectively. Then distribution is the…

A:

Q: Cholesterol levels for women ages 20-34 are approximately normally distributed with a mean of 185…

A:

Q: Grades in an exam are normally distributed with a mean of 60 and a standard deviation of 10. What is…

A: We have given the following information.  Population mean = 60 Population standard deviation = 10.

Q: The number of pizzas consumed per month by university students is normally distributed with a mean…

A: Let X be the random variable from normal distribution with mean (μ) = 14, standard deviation (σ) = 5…

Q: The number of pizzas consumed per month by university students is normally distributed with a mean…

A: Normal distribution :  Mean = 6  Standard deviation = 2  First we will calculate Z-score Z =…

Q: The number of pizzas consumed per month by university students is normally distributed with a mean…

A:

Q: Referring to the example below If a compliance rate of 95% is expected how many of the 750 charts…

A: Given,  Total charts requested = 750 Compliance rate = 95%

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.