A census of the labor force in a large metropolitan area found that the time is takes for people to continue to work has a mean of 20.5 minutes and standard deviation of 15.4 minutes. What is the probability that a rondom sample of 40 people have a mean commute time that is greater than 25 minutes?

Q: A company has 1,000 employees. The average number of workdays between absence for illness is 87 with…

A: The objective of this question is to find the probability that the sample mean of workdays with no…

Q: A survey in the N.Y. Times Almanac finds the mean commute time (one way) is 25.4 minutes for the 15…

A: Solution: State the hypotheses. Null hypothesis: That is, the mean commute time is not less than…

Q: Calculators from Caseo Company and Sharpy Company has a mean life span that is normally distributed.…

A: The mean life spans of calculators from Caseo Company and Sharpy Company are normally distributed.…

Q: A survey in the N.Y. Times Almanac finds the mean commute time (one way) is 25.4 minutes for the 15…

A:

Q: In a random sample of 23 private school teachers in queens county the average teaching experience is…

A:

Q: According to the USDA, the mean intake of calories of males 20-39 is 2716 with a standard deviation…

A: It is given that the mean and standard deviation are 2,716 and 72.8, respectively. The sample size n…

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

A: Let X be the random variable denoting that the amounts of weight that male college students gain…

Q: Let's assume that 6 weeks old golden retriever puppies' weights are normally distributed with a mean…

A: Answer: From the given data, Let X: Weight of puppies Mean μ = 8.1 Pounds Standard deviation σ = 1.3…

Q: The amount of detergent dispensed into bottles of liquid laundry detergent bottles for a particular…

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Q: Energetic Co., a battery manufacturer, claims their battery lasts for 69.83 months with a standard…

A: Answer:- Given , Energetic Co., a battery manufacturer, claims their battery lasts for 69.83 months…

Q: After an exhaustive university-wide student survey, it was found that the IQ scores of Brac…

A: For normal distribution , z=(x-?)/? , where, ? = mean , ? = standard deviation a. we have to find…

Q: The mean time spent solving this problem is 4.25 minutes with a standard deviation of 1.7 minutes.…

A: Given Information: Population mean (u) = 4.25  Standard deviation (s) = 1.7 Sample size (n) = 32…

Q: unts of weight that male college students gain during their freshman year are normally distributed…

A: Given that.   X~N( μ , ?^2 )   μ=2.3     , ?=10.2   Z-score =( x - μ )/?

Q: probability that this sample will have an average score between 21 and 26?

A: Given Data : Population Mean,μ = 25 Population Standard Deviation,σ = 6.5

Q: In general, train commuting time for VU students travelling to campus from home is normally…

A: Given that :mean (μ)=52 Standard deviation (σ)=7 Let X be the random variable of the students who…

Q: Traveling between University of Santo Tomas and Rizal Park, Manila via shuttle bus takes, on…

A: Given that, μ=28,σ=5 and n=40 The mean and standard deviation of the sample mean is,

Q: Traveling between University of Santo Tomas and Rizal Park, Manila via shuttle bus takes, on…

A: Solution: Let X be the transport time. From the given information, X has mean µ=28 minutes and 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: Fran is training for her first marathon, and she wants to know if there is a significant difference…

A: Given data,n1=40x1=46.6σ1=4.6n2=45x2=48.8σ2=2.4Compute value of test statistic?

Q: Historically, the average score of PGA golfers for one round is 65 with a standard deviation of…

A: Answer:- Given , the average score of PGA golfers for one round is (µ) 65 with a standard deviation…

Q: The time it takes to train a newly hired telephone sales representative is normally distributed with…

A: It is given that, time to train a newly hired telephone sales representative follows normal…

Q: Almost all medical schools require applicants to take the Medical College Admission Test (MCAT).…

A: Obtain the probability that this sample will have an average score between 23 and 26.   The…

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

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

Q: the average score on s math test is 75 with a standard deviation of 8. What is the probability that…

A: The Z-score for the random variable X equals 90 is obtained below as follows: The Z-score for the…

Q: what is the probability that the bottle contains more than 11.5 ounces

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Q: Scores on the MCAT are approximately Normal with a mean of 25 and a standard deviation of 6.5. To…

A: Given Data : Population Mean,μ = 25 Population Standard Deviation,σ = 6.5

Q: The composite scores of individual students on the ACT college entrance examination in 2019 followed…

A: Solution: Let X be the composite scores of individual students on the ACT college entrance…

Q: A company that owns a fleet of cars for its sales has found that the service lifetime of disc brake…

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Q: A census of the labor force in a large metropolitan area found that the time it takes for people to…

A:

Q: The time needed for passengers to board the Twisting Thunder roller coaster is skewed right with a…

A:

Q: The SAT is an exam that is used by many universities for admission. Suppose that the scores on the…

A: Solution: Let X be the score on SAT mathematics exam. From the given information, X follows normal…

Q: The cost of unleaded gasoline in San Francisco once followed an unknown distribution with a mean of…

A: Given that, The mean and standard deviation of the sampling distribution of sample mean is,

Q: Suppose the heights of 18-year-old men are approximately normally distributed, with mean 66 inches…

A: Let "x" be the heights of 18-year-old men. Draw the normal curve and shade the area between…

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.