STATISTICS AND PROBABILITY (Answer only. NO long explanation needed. Rate will be given) ANSWER IN 2 DECIMAL PLACES) The length of time it takes a car salesperson to close a deal on a car sale is assumed to be normally distributed. A random sample of 100 such times was selected and yielded a mean of 3 hours and variance of 0.5 hour. The 95 percent confidence interval for the mean length of time it takes a car salesperson to sell a car is: ________ hours to _______ hours

STATISTICS AND PROBABILITY (Answer only. NO long explanation needed. Rate will be given) ANSWER IN 2 DECIMAL PLACES) The length of time it takes a car salesperson to close a deal on a car sale is assumed to be normally distributed. A random sample of 100 such times was selected and yielded a mean of 3 hours and variance of 0.5 hour. The 95 percent confidence interval for the mean length of time it takes a car salesperson to sell a car is: __ hours to _ hours

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.4: Distributions Of Data

Problem 19PFA

See similar textbooks

Related questions

Q: The height of the students at Great Lake University is normally distributed with a mean (mu) of 68…

A: The question is about normal distribution.Given :Population mean height of students ( ) = 68…

Q: A cigarette manufacturer claims that his cigarettes have nicotine content that does not exceed 2.0…

A: Introduction :- Here we want to identify the correct set of hypothesis to test the claim of…

Q: Assume that different groups of couples use a particular method of gender selection and each couple…

A: From the given information, n=23 and p=0.5 a) Mean: Mean=n*p =23*0.5 =11.5 PArt…

Q: A racing car is one of the many toys manufactured by Mack Corporation. The assembly times for this…

A: Mean()=55standard deviation()=4The company closes at 5 P.M every day

Q: A notable indicator of a baby's health is the weight gained in the first year of the baby's life.…

A: Given that Sample size =14 Sample mean =5904 Sample standard deviation =1611 For confidence level…

Q: Assume that the heights of men are normally distributed with a mean of 71.3 inches and a standard…

A: Central Limit Theorem for mean: If a random sample of size n is taken from a population having mean…

Q: . A cannery processes sardines. Sardines have a mean length 4.54 inches with a standard deviation…

A: Solution: Let X be the length of sardines. From the given information, X has a mean µ=4.54 inches…

Q: A researcher wants to know if there is a difference between the mean amount of sleep that people get…

A: Given that By using excel anova

Q: In an certain species of newt, offspring are born either green or black. Suppose that 60% of these…

A: Given Information:Sample proportion() = 60% =0.6Sample size (n) = 185

Q: The salaries of elementary echool teachere are normally dietributed with a mean of $32,000 and a…

Q: Find the probability that a sample of 18 has a sample mean below 32. The population mean is 24 and…

A: Central Limit Theorem for mean: If a random sample of size n is taken from a population having mean…

Q: A quart of Parker's milk contains a mean of 39 grams of butterfat, with a standard deviation of 2…

A: Mean = 39 Standard deviation = 2

Q: Calculate confidence intervals for ratio of two population variances and ratio of standard…

A: a) Given: Sample size, n1=30 Sample size, n2=39 Sample standard deviation 1, s1=16.37 Sample…

Q: During a wisdom teeth removal procedure, 1, 2, 3, or 4 wisdom teeth are removed, depending on the…

A: Central limit theorem As per the Central limit theorem, the sampling distribution of sample mean…

Q: What is the source of variability in the random variable? O A. Random errors OB. The sample size C.…

Q: A voin is tossed four times. Let x denote the number of heads. Find the mean and standard deviation…

A: A coin is tossed four times. The denotes the number of heads.

Q: During a wisdom teeth removal procedure, 1, 2, 3, or 4 wisdom teeth are removed, depending on the…

A: We have given that, mean (μ) = 3.90 and standard deviation (σ) = 0.88 and sample size (n) = 10

Q: When a random sample of size 400 is selected then the standard error of the sample mean will be 0.5.…

A: GivenIf n = 400then 5.E = 0.5If n = 100 5.E = ?

Q: 84 tires in a factory are tested for defectiveness. 12% of tires made in the factory are defective.…

A: From the provided information, Sample size (n) = 84 tires 12% of tires made in the factory are…

Q: Select the statistic test that best fits each description. Number of heart attacks per blood type…

A: Introduction:A brief introduction to the various tests suggested here is given below:T-test…

Q: A cigarette manufacturer claims that his cigarettes have nicotine content that does not exceed 2.0…

Q: During a wisdom teeth removal procedure, 1, 2, 3, or 4 wisdom teeth are removed, depending on the…

A: (a) Obtain the mean of the sampling distribution of the sample mean. The mean of the sampling…

Q: A normal population has a mean 100 and variance 25. How large must the sample size be if we want the…

Q: During a wisdom teeth removal procedure, 1, 2, 3, or 4 wisdom teeth are removed, depending on the…

A: We have to find mean and sd.

Q: The probabilities that a person is receiving a chat message 0, 1, 2, 3, 4, or 5 per day are the…

A: Let X be the random variable having probability distribution is, X 0 1 2 3 4 5 P(x) 0.08 0.19…

Q: Consider an experiment in which a coin is tossed thrice. Let X be the number of heads. Find the…

Q: A civil engineer takes a public ride going to his firm. The average time for his trip is 24 minutes,…

A: Given : A civil engineer takes a public ride going to his firm. The average time for his trip is 24…

Q: Suppose the mean starting salary for nurses is $67,290 nationally. The standard deviation is…

Q: he mean GPA of all 45,038 students at Uneeda College is 3.21. A random sample of 50 GPAs from the…

A: given data mean GPA of all 45,038 students at Uneeda College is 3.21. A random sample of 50 GPAs…

Q: A random sample of size 1,000 is taken from a population where the population proportion p = .02.…

A: From the provided information,n = 1000Population proportion (p) = 0.02

Q: Suppose that the distance of fly balls hit to the outfielder ( in baseball) is normally distributed…

A: Part a Given: The random variable X represents the distance of fly balls hit to the outfielder. Part…

Q: Many employers are concerned about employees wasting time by surfing the Internet and e-mailing…

A: Find sample mean:

Q: The weights of rabbits on an island, measured in pounds, are normally distributed with mean 4.5 and…

A: X = The weights of rabbits on an island measured in pounds.

Q: The mean and standard deviation of a population are 200 and 20, respectively. The probability of…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Question

STATISTICS AND PROBABILITY (Answer only. NO long explanation needed. Rate will be given) ANSWER IN 2 DECIMAL PLACES)

The length of time it takes a car salesperson to close a deal on a car sale is assumed to be normally distributed. A random sample of 100 such times was selected and yielded a mean of 3 hours and variance of 0.5 hour.

The 95 percent confidence interval for the mean length of time it takes a car salesperson to sell a car is: ________ hours to _______ hours

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

Expert Solution