Mean=126 millimeters and standard deviation=8 millimeters. If a random sample of 37 bolts is selected, what is the probability that the sample mean would be greater than 128 millimeters?

Q: A set of 10 scores has a standard deviation of 8. What is the sum of squares?

A: Given,Number of scores = 10Standard deviation = 8Using formulas,For population, For sample,

Q: In a series of 5 observations, the values of mean and variance are 4.4 and 8.24. If three…

A: It is given that the mean and standard deviation are 4.4 and 8.24.

Q: Measuring lung function: One of the measurements used to determine the health of a person's lungs is…

A: The hypothesized mean is 2.1.

Q: a division wide aptitude test in mathematics was conducted to 1000 students. the mean of the test is…

A: Given : No. of students : Sample size (n) = 1000 Let X : Scores in aptitude test in mathematics…

Q: In a series of 5 observations, the values of mean and variance are 4.4 and 8.24. If three…

A:

Q: weight of 10 persons needs to be greater than 190.29 xceed the weight of the elevator. (d) What is…

A: It is given that  Mean, μ = 155 Standard deviation, σ = 29 Sample size, n = 16 Weight limit = 2500

Q: The class mean for the exam was 82 with a standard deviation of 6.  There are 37 students in the…

A: We have given that, Mean = 82 , standard deviation σ = 6  sample size n = 37   Standard error of the…

Q: A variable is normally distributed with mean 10 and standard deviation 3. Find the percentage of all…

A: Given  μ =10,σ=3 X~N(μ =10,σ2 =32)  We want to find the probability  P(73<X<80)= ?  Note: This…

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

A:

Q: A teacher says that the top 9​% of the class received an A on the last test. The scores were…

A: Given that the mean is 67 and the standard deviation is 18. That is, μ=67, σ=18 A teacher says that…

Q: If the Mean of a data set is 700 and the Variance is 49; Calculate the intervals used for the…

A: Given information, Mean of a data set = 700 Variance = 49 We have to calculate intervals using…

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

A: We have to find probability..

Q: A particular fruit's weights are normally distributed, with a mean of 702 grams and a standard…

A: Introduction: Define X as the random variable of interest here, denoting the weight of a randomly…

Q: The students in a certain high school have an average height of 160 cm with a standard deviation of…

A: Given : Sample size = n = 50 standard deviation = σ = 12

Q: The test scores are normally distributed with a mean of 78 and a standard deviation of 9. If 39…

A: Obtain the probability that the average score is between 80 and 84. The probability that the average…

Q: If the scores follow normal distribution with a mean of 120, a standard deviation of 10, find…

A: Solution

Q: The variance of a population is 6. the size of the sample collected from a population is 228 What is…

A: Variance of population=S2=6, Sample size=228

Q: what would be a good hypothesis for calculating the average speed for cars

A: Introduction Hypothesis is an assumption that is being tested.

Q: The mean of a test is 400 and the standard deviation is 75. It is normally distributed. A sample of…

A: 1] Mean μ=400 2] standard deviation σ=75 3] n=25 4] μx¯=400σx¯=σn=7525=15

Q: particular fruit's weights are normally distributed, with a mean of 395 grams and a standard…

A: We have given that Mean=395

Q: The variance of a population is 8. the size of the sample collected from a population is 328 What is…

A: Answer: From the given data, Variance (σ2) = 8 Sample size(n) = 328

Q: If the scores follow normal distribution with the mean of 84 and a standard deviation of 7, find…

A:

Q: The mean and variance of population with sample size is 100 is 20 and 4 respectively.Calculate the…

A:

Q: a male polar on average weighs 525 kg the population of standard deviation is 58 kg suppose that the…

A: Given information- Population mean, µ = 525 kg Population standard deviation, σ = 58 kg Let X be the…

Q: An ABC new report stated that the mean distance that commuters in the United States travel each way…

A: Given : μ = 16 , σ= 8 and n= 75

Q: When tossing two dice and finding the mean, X we find that has a mean or expected value, and a…

A: Here, it is known that the mean is 3.5 and a population standard deviation of 1.7078. The sample…

Q: A particular fruit's weights are normally distributed, with a mean of 727 grams and a standard…

A: The mean is 727 and the standard deviation is 34 grams.

Q: In a normal distribution, mean is 60 and standard deviation is 5. How many of the cases have scores…

A: The probability between two specific numbers a and b in a normal distribution with mean μ and…

Q: The weights of college football players are normally distributed with a mean of 193 pounds and a…

A: Mean = 193 Standard deviation = 53

Q: Three randomly chosen Seattle students were asked how many round trips they made to Canada last…

A: Geometric Mean : If there are X1, X2,...., Xn are n observations then the geometric mean is given…

Q: If you pick 2 fruits at random, then 7% of the time, their mean weight will be greater than how many…

A: Let X denote the fruit's weight. Given that X follows N(mean = 495, SD = 32) Sample size n = 2

Q: If the standard error,  of a sample data set is 5 and the standard deviation,  of the distribution…

A: For a population with mean µ  and standard deviation σ, the standard error is σx̅ = σ/√n, where x̅…

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.