A manufacturer wants to state a specific guarantee for the life of a product with a replacement for failed products. The distribution of lifetimes of the product is normal and has a mean of 1000 days and standard deviation of 150 days. What life length should be stated in the guarantee so that only 10% of the products need to be replaced?     Computed life length is: __

Q: (i) Enter an exact number as an integer, fraction, or decimal. (ii) Enter an exact number as an…

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Q: Suppose a population is known to be normally distributed with a mean, equal to 116 and a standard…

A: Given dataMean = 116Standard deviation = 14Probability that population would be between 116 and 130…

Q: Suppose a small paint manufacturing company has a daily production that is normally distributed with…

A: Solution: It is given that a small paint manufacturing company has a daily production that is…

Q: Q5. Television from a company are found to last on average for three years without any hardware…

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Q: Suppose baby kittens' weights are normally distributed with a mean of 11.9 and a standard deviation…

A: a) Consider that the mean and standard deviation of a random variable X are µ and σ, respectively.…

Q: The mean life of pairs of shoes is 40 months with a standard deviation of 8 months If the life of…

A: The random variable X is the life of shoes It is normally distributed. The mean life of the pair of…

Q: Scores on a test have a mean of 86 and a standard deviation of 13. Jerrica has a score of 94.…

A:

Q: Suppose that a certain brand of light bulbs has a mean life of 600 hours and a standard deviation of…

A: Solution: Let X be the lifetime of a bulbs. From the given information, X follows normal…

Q: The mean age of a class of twenty-five students is 23.8 years. How old would a twenty-sixth student…

A: The mean age of a class of twenty-five students is 23.8 years. The formula to calculate the mean…

Q: In a​ country, the mean time served by prisoners released from prison for the first time is 31.5…

A: Mean time = 31.5Standard deviation = 16.3

Q: Suppose that a laboratory analyzes biological specimens to determine the concentration of toxins.…

A: Given:

Q: If z, and x be 2 values of a variable x and each of the remaining (n – 2) values be +), find the…

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Q: Suppose that resting pulse rates among healthy adults are normally distributed with a mean of 75…

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Q: Suppose that the lifetimes of TV tubes are normally distributed with a standard deviation of 1.2…

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Q: Using the A finite lot of 10 memory boards is 50% nonconforming. hypergeometric distribution, what…

A: As per our guidelines we can solve first question and rest can be reposted. Solution-: Given: N=10…

Q: the average grade is 84 with a standard deviation of 4. What is each grade for -1 2 0 1.5 -1.25

A: Given Mean μ=84Standard deviation σ=4 The formula for Z score isZ=X-μσX=Z×σ+μ

Q: A variable is normally distributed with a mean of 100 and a standard deviation of 10. A student…

A: From the given information,   Mean = 100 Standard deviation = 10

Q: Suppose a population is known to be normally distributed with a mean, equal to 116 and a standard…

A: The percentage of the population would be between 116 and 144 is obtained below:It is given that the…

Q: The weights for a population of North American raccoons have a bell shaped frequency curve with a…

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Q: Suppose the distributions of arrival and service times were normal instead of exponential.  Let the…

A: The objective of this question is to estimate the long-run average number of people that would be in…

Q: A particular fruit's weights are normally distributed, with a mean of 696 grams and a standard…

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Q: Approximate the standard deviation of age for males. I already know that the population mean is…

A: Given data table is,Agemalesfemales0 - 910510 - 1910720 - 29171630 - 39181640 - 49212250 - 59232560…

Q: ENG 342 fınal exam of last semester has a mean score of 78 and a standard deviation of 8. Sally's…

A: Given,mean(μ)=78standard deviation (σ)=8Z-Score=1.5

Q: A distribution of values is normal with a mean of 190 and a standard deviation of 5. Find the…

A: GivenMean(μ)=190standard deviation(σ)=5

Q: The 6 participants in a weight-loss class lost the following weights (in pounds) after three weeks…

A: Number of samples (n) =6Data of weight loss : 3, 6, 4, 4, 5, 2Find the population standard deviation…

Q: A researcher named liza wants to estimate the mean age of pilots in an airline company. The…

A: Given: σ=6.30Length of the interval=3.2

Q: Assume that at the average age of a population of wild turtles is normally distributed with mean age…

A: In question,  Let X be random variable denoting the age of a population of wild turtles.  Given, X ~…

Q: Suppose that the TSH (Thyroid Stimulating Hormone) levels among healthy individuals are normally…

A: Given that  TSH (Thyroid Stimulating Hormone) levels among healthy individuals are normally…

Q: The scores on a test are normally distributed with a mean of 100 and a standard deviation of 20.…

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Q: Assume that the readings on the thermometers are normally distributed with a mean of 0 degrees   and…

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Q: Assume that an intelligence test scores are distributed normallt with a mean of 100 and a standard…

A: Standard normal distribution: The standard normal distribution is a special case of normal…

Q: Male and female populations of elephants under 80 years old are represented by age in the table…

A: Here the given table is : Age males…

Q: Test scores for a Statistics class have a mean of 81 with a standard deviation of 4. Test scores…

A: The provided information is, For statistics class:μ=81,σ=4For Calculus class:μ=75,σ=3.5   The…

Q: A different investor decides to invest $8000 in Fund A and $3000 in Fund B. Assuming the amounts…

A: Here's how to proceed:### 1. Investment DetailsYou've mentioned investments of $8000 in Fund A and…

Q: On average indoor cats live to 14yrs oldvwith a standard deviation of 2.4 yrs.Suppose the…

A: It is given that the mean is 14 and the standard deviation is 2.4.

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 263 days…

A: Solution-: Given: μ=263 days, σ=13 days We want to find what range would you expect to find the…

Q: The body lengths of deer mice are known to vary approximately normally, with mean 86 mm and standard…

A: Here we need to test whether the vitamin supplements has increased the body length of the deer mice.

Q: Find the mean and standard deviation of the waiting time for counter A and B.

A: The values for counter A are- 18, 21, 22, 23, 23, 24, 24, 25, 25, 25, 26, 30, 32, 34, 50 The values…

Q: A homeowner has installed a new energy-efficient furnace. It is estimated that over a year the new…

A: We know that if; X1,X2,...,Xn~Normal(μ,σ2), independently Then; Sn=X1+X2+...+Xn~Normal(nμ,nσ2)

Q: Suppose that the lengths of pregnancies are normally distributed with a mean of 271 days and a…

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Q: Assume the data set described is normally distributed with the given mean and standard deviation,…

A: Given, μ = -14.3σ = 1.7n = 140    To find, P (-17.7 < X < -10.9) = ?

Q: Assume that adults have IQ scores that are normally distributed with a mean of u = 100 and a…

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

Q: Suppose that the speeds of cars travelling on California freeways are normally distributed with a…

A: Given X=80 Mean=63