The standard deviation of measurements of a linear dimension of a mechanical part is 0.14 mm. What sample size is required if the standard error of the mean must be no more than 0.04 mm? * 13 10 12 11 O O O

Q: 29. The standard deviation of a variable is 15. If a sample of 100 individuals is selected, what…

A: Since you have posted more than one question, we are answering the first question as per our rule.…

Q: Approximately how much area under a normal curve falls between +1 standard deviations? O 95% O…

A: Empirical Rule:   It is clear that is used for normal distribution with the specified value of mean…

Q: Assume that the amounts of weight that male college students gain during their freshman year are…

A: Given : Let X : Amount of weight that male college students gain during their freshman  X~N(μ=1.4 ,…

Q: The standard deviation of a 1500 volume population is 54'cm. In the case of "non-refundable…

A:

Q: The mean and standard deviation of the sample mean is given by Mean= Hx = µ = 2560 Standard…

A:

Q: An oceanographer claims that the mean dive duration of a North Atlantic right whale is 11.3 minutes.…

A: Given: Sample size, n=35Sample mean, x¯=12.2Sample sd, s=2.2

Q: At what sample size would the standard deviation of the distribution of all possible sample means be…

A:

Q: 4. Consider a normal population mean of 89 and population standard deviation of 63 Calculate the…

A:

Q: From a normally distributed population, we took a simple random sample of 700 students with a mean…

A: Sample size n=700 Sample mean x¯=640 Population Standard deviation σ=300

Q: The distribution of weights (rounded to the nearest whole number) of all boxes of a certain cereal…

A: Given: μ=20σ=2 A. The range of weights includes all of the weights of cereal boxes that are within…

Q: The standard deviation of a sample is directly proportional to the square root of its sample size.…

A: We have given the following statement about the standard deviation.

Q: The diameter of a brand of tennis balls is approXimately normally distributed, with a mean of 2 78…

A: Here in the above question is given that, Mean is 2.78    standard deviation is 0.03 And n is 12

Q: A randam sample of 20 apartments has a mean of AED 4000 and a standard error (a/(vn)) of 1,000. You…

A:

Q: The standard deviation of the population of IQ Scores is standardized to be 15 points. Calculate the…

A: (a) Obtain the standard error of the mean for the sample of size of 81. The standard error of the…

Q: v Fl X Q MQM 10 es/4428917/take estion 10 How many commuters must be randomly selected to estimate…

A: Given, Margin of Error E = 4 Standard deviation σ = 6 99% confidence level α = 0.01 Critical value…

Q: For the test described in Scenario A, 32 apartments were measured and the sample mean found to be…

A: Given that  Sample size n =32 Sample mean =1237 Standard deviation =45

Q: The population standard deviation (σ) is necessary for conducting a ___________. A One-sample t…

A: A z-test is defined as a statistical procedure that is used to determine whether the sample mean…

Q: At what sample size would the standard deviation of the distribution of all possible sample means be…

A: We have given that,  We have to choose sample size when population standard deviation and sample…

Q: (a) If specifications for a research project require the standard error of the corresponding x…

A: Givenσx=9σ=72

Q: The standard deviation of the diameter of 18 baseballs was found to be o.29 cm. Find the 95%…

A: Given: Sample size (n) = 18 Sample standard deviation (s) = 0.29 Confidence level = 0.95 So,…

Q: With individual lines at the checkouts, a store manager finds that the standard deviation for the…

A: Here, the data is based on the waiting time. Hence, only one population is involved in the study.…

Q: From a normally distributed population, we took a simple random sample of 700 students with a mean…

A:

Q: Find P(X>37)

A: Let x is defined as the miles per gallon(mpg) which follows normal distribution with mean 35 mpg and…

Q: A machinist is making engine parts with an axle diameter of 0.700cm. A random sample of 10 parts…

A: We know that: Where, m=mean, μ=theoritical value, s=standard deviation and n=sample size

Q: For samples of the specified size from the population described, find the mean and standard…

A: From the provided information, Mean (µ) = 75 Standard deviation (σ) = 14 X~N (75, 14)

Q: What is the standard error of the estimate (se )? 105.182 1.754 o 1.532 What is the estimate of the…

A: We have used the excel data analysis tool to run the regression analysis.

Q: The standard deviation of a population of 10000 volume is 62cm. In the case of "non-refundable…

A: The formula for sample size for a given confidence interval and population standard deviation is:

Q: In determining automobile mileage ratings, it was found that the mpg (X) for a certain model is…

A: Given: Formula:

Q: An oceanographer claims that the mean dive duration of a North Atlantic right whale is 11.4…

A:

Q: The standard deviation of a sample is inversely proportional to the square root of its sample size.…

A:

Q: Assume that the weight of 1-year-old girls in the USA is normally distributed with Mean = 9.5 kg,…

A: Note: Hi, thank you for the question. As per our company guideline we are supposed to answer first…

Q: A population is normally distributed with a mean of 51 and a standard deviation of 12. (a) What is…

A: (a) Obtain the mean of the sampling distribution for the given population. The mean of the sampling…

Q: The standard deviation of a 1200 volume population is 90cm. Find out how many units the sample…

A: 6.

Q: The standard deviation of a 1500 volume population is 54'cm. Find out how many units the sample…

A:

Q: The coefficient of variation of the height of 20 people selected at random from a given city is…

A: GivenFor weight of the selected groupMean(μ)=72standard deviation(σ)=8

Q: The mean and standard deviation of a normal variate are 70 and 16 respectively. Find P(38 < x < 46).

A: As per our guidelines we are supposed to answer only one question per post so i am solving first…

Q: Consider a large population with?=67 and ?=6. Assuming ?/?≤0.05, find the mean and standard…

A: GivenMean(μ)=67standard deviation(σ)=6

Q: Assuming the standard deviation remains constant. Which of the folle sample sizes would result in…

A: NOTE: As per the guidelines, we are supposed to solve the first question only. Please repost other…

Q: The life expectancy of a certain type of small motor is normally distributed with a mean of 9 years…

A: Sorry! According to our guidelines, we can answer only one question at a time. Kindly re-post the…

Q: If the population standard deviation is 8, at 95% CI, sample mean is within 4 of the population mean…

A: Given, σ=8E=4z- value at 95% confidence is Zc=1.96n=?

Q: The sample size needed to estimate a population mean within 1.5 units with a 99% confidence when the…

A: From the provided information, Population standard deviation (σ) = 8 and E = 1.5 Confidence level =…

Q: The weight of students studying at a national university follows a normal distribution with a mean…

A: Given,margin  of error (E)=0.03standard deviation (σ)=0.24α=1-0.99=0.01α2=0.005Z0.005=2.58

Q: The grade point average collected from a random sample of 150 students. Assume that the population…

A: s = 0.78 n = 150 z-critical value at 0.02 = 2.33

Q: The scores on a mathematics exam have a mean of 70 and a standard deviation of 6. Find the x-value…

A: We have given that  Mean = 70 Standard deviation = 6 Z-score, z = 5.19

Q: Suppose a population has a mean weight of 180 pounds and a standard deviation of 25 pounds. A sample…

A: Given,mean(μ)=180standard deviation(σ)=25sample size (n)=100

Q: A population has a standard deviation of 8. What is the minimum sample size needed to estimate a…

A: Given : Margin of error, ME = 2.0 population standard deviation, σ = 8.0…

Q: 5. For a population with a standard deviation of o = 20, how large a sample is necessary to have a…

A:

Q: The weight of items produced by a machine is normally distributed with a mean of 8 ounces and a…

A: Given: μ=8, σ=2 The corresponding z-values needed to be computed are: The probability that the item…

Q: The heights of male MIAT student are normally distributed with mean 1.7 m and standard deviation 0.2…

A: According to the given information, we have Mean = 1.7 Standard deviation = 0.2

Q: In determining automobile mileage ratings, it was found that the mpg (X) for a certain model is…

A: X follows a Normal distribution with mean = 38 and S.D = 1.6 Then z=(x-mean)/SD = (x-38)/1.6…