A manufacturer claims that the mean lifetime of its lithium batteries is 1400 hours. A homeowner selects 35 of these batteries and finds the mean lifetime to be 1370 hours with a standard deviation of 70 hours. Test the manufacturer's claim. Use a = 0.05. Test Statistic = Round to thousandths place. P-Value = Round to thousandths place. Decision: Write 'Reject' or 'Fail to Reject'

Q: For the 2017 romantic comedy film, The Last Jedi, 300,000 IMDB viewer ratings show a mean of 7.2…

A: The known values are, The value of k is,

Q: The average time it takes a certain brand of ibuprofen to start working is 25 minutes, with a…

A: The mean of the sampling distribution of the sample mean is represented as and is given by

Q: Aaron, as a fifteen-year-old, established a mean time of 16.43 seconds for swimming the 25-yard…

A: It is given that the mean time for swimming the 25-yard freestyle is 16.43 seconds and standard…

Q: The time it takes a computer repair company to diagnose a computer follows a normal distribution…

A: Given data  X = time taken for computer repair company to diagnose a computer μ=50   σ=12…

Q: A successful basketball player has a height of 6 feet 2 ​inches, or 188 cm. Based on statistics from…

A: Given the Z score of height of basket ball player is 1.95. The original height of the basket ball…

Q: The year Ali graduated college, he got a job as an entry-level software engineer working for a firm…

A: Solution

Q: The heights of adult men in America are normally distributed, with a mean of 69.5 inches and a…

A: 69.5 2.62 64.4 2.53 American woman:

Q: The lifetime of light produced by a company is normally distributed with standard deviation of 80…

A: Given : Let X : Lifetime of light produced by a company is normally distributed with  Standard…

Q: Pearson revises books each semester and the mean number of pages for 2010 is 568 with a standard…

A: Let, X= number of pages  Given that X follows normal distribution with mean= 568 and standard…

Q: The average price of an instrument at a small music store is $345. The standard deviation of the…

A:

Q: The average time it takes a certain brand of ibuprofen to start working is 25 minutes, with a…

A: Given Information :  The average time it takes a certain brand of ibuprofen to start working is 25…

Q: If a data set has a mean of 80 and a standard deviation of 10, calculate + 1.5 standard deviations

A: Here, the data set has a mean of 80 and a standard deviation of 10.

Q: A successful basketball player has a height of 6 feet 4​inches, or 193cm. Based on statistics from a…

A: The z-score identify that the value how many standard deviations from the mean. If the z-score is…

Q: The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally…

A:

Q: A manufacturer claims that the mean lifetime of its lithium batteries is 1400 hours. A homeowner…

A: Given, Claim: A manufacturer claims that the mean lifetime pf its lithium batteries is 1400 hours.…

Q: Jeffrey, as an eight-year-old, established a mean time of 16.43 seconds for swimming the 25-yard…

A: Given n=15 x=16σ=0.8μ=16.43α=0.05

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: The mean grade of Adrian in the standard deviation was 7. In Science, his mean grade was 89 and the…

A:

Q: The typical college freshman spends an average of ?=150minutes per day, with a standard deviation of…

A: Solution: Let X be the time on social media. From the given information, X follows normal…

Q: The mean test score for a history test is 63 with a standard deviation of 9. The mean test score for…

A: It is given that the mean test score and standard deviation for history test are 63 and 9, the mean…

Q: The average rancher has a mean 2500 head of cattle. After a vegetarian riot in Montana, the hope is…

A: Our sample mean(x-bar) = 2458 and standard deviation(s) = 88 sample size(n) = 26 Our null…

Q: A forest ranger researching ecosystem recovery following forest fires collected data on a large…

A: Given that Mean = 3.2 feet Standard deviation = 0.6 feet

Q: The luggage weight for individual air travelers on some specific route have a mean of 80 pounds and…

A: Given information: The luggage weight for individual air travelers on a specific route, measured in…

Q: In Pittsburgh, PA, about 56% of the days are cloudy. June, which has 30 days, is to be considered.…

A: Hey there! Thanks for posting the question. Your question has more than three sub-parts. However, we…

Q: PROVIDE TYPED ANSWER  What is the mean age among men? What is the standard deviation (SD) of age…

A: A table with demographics, disease traits, BMI for all men and women are given.Also,Level of…

Q: The mean height of a population of men is 70.8 inches and the standard deviation is 3.2 inches. What…

A:

Q: Professor Ivy’s students have a Mean grade of 69.5 and a Standard Deviation of 6.5.  If Johnny has…

A: From the provided information, Mean (µ) = 69.5 Standard deviation (σ) = 6.5 Let X be a random…

Q: The​ quality-control manager at a compact fluorescent light bulb​ (CFL) factory needs to determine…

A: The population standard deviation is 92 hours.

Q: Mrs. Saint's Biology Test had a mean score of 75 with a standard deviation of 8.  Find the Z-score…

A: The Z score is a statistical tool that tells you how many standard deviations away is your data from…

Q: During one season of racing at the Talladega Superspeedway, the mean speed of the cars racing there…

A:

Q: The state of California has a mean annual rainfall of 22 inches, whereas the state of New York has a…

A: Given: For California: Mean,μ=22Std deviation,σ=4Sample size, n=30 For New York: Mean,μ=42Std…

Q: Vivino website, suppose the mean price for a bottle of red wine that scores 4.0 or higher on the…

A: Given: Sample mean x¯=30.15 Sample standard deviation (s) =  12 Sample size (n) = 59 Hypothesized…

Q: The mean grade of in the final examination in Mathematics was 85 and the standard deviation was 7.…

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

Q: The advertised weight is 2.13 ounces , the mean is 2.2 ounces and the standard deviation is 0.04…

A: P(X < 2.13) = = P(Z < -1.75)= 0.0401 or 4.01%

Q: According to a marketing website, adults in a certain country average 51 minutes per day on mobile…

A: We are given,Mean = μ = 51Standard deviation = σ = 7Percentile = 80th

Q: A successful basketball player has a height of 6 feet 77​inches, or 201201 cm. Based on statistics…

A: Given information- Height of a player = 201 cm Z-score = 3.743 We know that standard height is given…

Q: A biologist found the wingspans of a group of monarch butterflies to be normally distributed, with a…

A: Given,Mean (μ) = 52.2Standard deviation (σ) = 2.3a) Required probability is…

Q: A test involving 340 men ages 20 to 24 found that their blood cholesterol levels had a mean of 188…

A:

Q: According to a website, the mean number of apps on a smartphone in the United States is 85.  Assume…

A:

Q: The daily water usage per person in Davao City is normally distributed with a mean of 18 gallons and…

A: Mean = 18 Standard deviation = 4

Q: Jeffrey, as an eight-year old, established a mean time of 16.43 seconds for swimming the 25-yard…

A: Population mean = ? = 16.43 Population S.D = ? =0.8 Sample size = n =15 Sample mean = x̅ = 16

Q: What is the correct conclusion?   A recent study found that 61 children who watched a commercial for…

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Q: According to the Department of Education the mean number of hours college students spend studying…

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Q: The time is takes a studen to walk from the dorn to the chemistry lab follows roughly a Normal…

A: Mean(µ) = 20 Standard deviations (σ) = 3 X ~ N (µ, σ )= N ( 20, 3)

Q: A researcher in Des Moines, Iowa sampled 56 households and found the mean number of puppies per…

A: # sample size n=56  population mean mu=3.03  standard deviations=1.5  then to find 62nd percentile…

Q: The mean height of male college students in a large city is 68 inches and the standard deviation is…

A: Answer:----.                       Date:----10/10/2021

Q: A man was out shopping buying 100 watermelons. He wanted to buy the largest fruit so he calculated…

A: We have to find out given probability..... As per guideline expert have to find out given first…

Q: recent study found that 61 children who watched a commercial for potato chips featuring a celebrity…

A: