If the standard deviation had been larger, the power would have been larger.

Q: A health care prifessional wishes to estimate the birth weights of infants. How large a sample must…

A: Given Information :  A health care professional wishes to estimate the birth weights of infants. He…

Q: the variance and standard deviation are based on the________________?

A: Variance, standard deviation and mean deviation:Variance is the average of squared difference of…

Q: For a population with a standard deviation of 40, how large a sample is necessary to have a standard…

A: We want to find the sample size

Q: what if the standard deviation was 30, instead of 60

A:

Q: What is the standard deviation of y?

A:

Q: find the V av iance and St andard deviation

A: We have Given a pdf of X whereas X is a continuous random Variable. The expected value or mean is…

Q: can you find the mean and standard deviation?

A: Let the male data set is denoted by x, then the mean is given by the formula x¯=∑xxn. Where, the…

Q: If there is a small amount of variation, then the standard deviation is what

A: Standard deviation: It is defined as the positive square root of the variance. It fulfils requisites…

Q: . Calculate the standard deviation for

A: Here given grouped data for age and no. Of member

Q: For a population: a. with a standard deviation of σ= 15, how large a sample would be needed to…

A: Given a) For population standard deviation of  σ= 15, standard error of 7    b) For population…

Q: If the dispersion is small the, the standard deviation is........?

A:

Q: Can you find the mean and the standard deviation with this data?

A: Given: Data on Index finger length for female. Step-by-step procedure to obtain the mean and the…

Q: If the mean height of bonsai trees is 52 cm with a standard deviation of 10 cm, 95% of the trees are…

A: NOTE : As per our guidelines we have to answer the first question if multiple questions are posted…

Q: In which distribution shape does the Standard Deviation Rule apply?

A:

Q: What is another name for the standard deviation of the variable x? What is the reason for that name?

A:

Q: If the standard deviation of sample A  is 5 and the standard deviation of sample B  is 12, what is…

A:

Q: Calculate the standard deviation of the following dat-

A: Let , the table given below,  Age(xi) No. of persond dying(fi) fixi fixi2 10 15 150 1500 20…

Q: The mean and standard deviation of the sampling distribution of the mean is shown as?

A:

Q: The sample standard deviation for the cost is $

A: The sample standard deviation for the frequency distribution is, s=1n-1∑ifixi-x2 The sums are,…

Q: If the standard error of the mean is σx̅ = 3 and the sample size is n= 64,then the population…

A:

Q: What are the best ways to find the standard deviation?

A: Standard deviation is a measure of variability. It describes how far the data falls from the…

Q: a) Cattle buyers hope that yearling Angus steers will weigh at least 1000 pounds. To see how much…

A: The mean of the given data is defined as a measure of central tendency of the data.  It is defined…

Q: A department store has daily mean sales of $ 28,372.72. The standard deviation of sales is $2000. On…

A: Given information- Mean sales, μ = $ 28,372.72 Population standard deviation, σ = $2000 Tuesday’s…

Q: Suppose that the variance of a hypothetical population is 49. What is the standard deviation?

A: Solution : Given : σ2 = 49 The variance of the population is denoted by σ2 and standard deviation is…

Q: A population has a standard deviation of 18 on average how much difference should exist for a random…

A: From the provided information, Population standard deviation (σ) = 18 Sample size (n) = 36

Q: Nabisco claims that Chip Ahoy Cookies have an x=28.67 per cookie with a SD=2.67. Assuming this…

A: Here, the sample standard deviation is given as 2.67.

Q: Define the term standard deviation?

A: Standard deviation: The standard deviation indicates by how much each observation differs from a…

Q: If the standard error of the mean is σx̅ = 3 and the sample size is n = 64, then the population…

A:

Q: What is the difference between the standard deviation and CV? When it is appropriate to use each…

A: Standard deviation: It is square root of variance. It is obtained by taking square root of sum of…

Q: is 6% is your standard deviation?

A: Given according to question Sample size(N)=? Confidence =95% Margin of error = 5% Now question says…

Q: If the range of a data set is 64, find the approximate value of the standard deviation, using the…

A: Given information- Range = 64 We have to find the approximate value of the standard deviation using…

Q: Square of the standard deviation is called

A:

Q: Can you find the mean and the standard deviation?

A: To find the mean and standard deviation of the given data: Mean is the sum of observations divided…

Q: de . Find the standard deviation of the observations 5, 11, 18, 25 and 41, using muill

A:

Q: If the mean score on a math quiz is 12.6 and 38.2​% of the students in your class scored between…

A: Mean = 12.6 area between 11.1 and 14.1 is 38.2%

Q: What is the standard deviation?

A: We have to calculate the SD for the given frequency distribution.

Q: Explain the standard deviation?

A: Standard deviation: Both the standard deviation and the variance are based on how much each…

Q: Both sets of values have an average of 13.  Is Set A's standard deviation smaller, larger, or about…

A: deviations from mean are more for set A 1-13, 2-13, 3-13, 23-13, 24-13, 25-13, -12, -11, -10, 11, 12…

Q: What conclusion can you make base on the standard deviation?

A: Answer:

Q: An analyst found that the average amount of money in bank accounts at his/her bank is $2,000 with a…

A:

Q: A person in the U.S. eats about 25 pounds of M&M's per year with a standard deviation of 3 pounds.…

A: Assume that a person in the U.S. eats of M&M's per year follow normal distribution. μ=25σ=3 Let…

Q: Write down the formulas for the standard deviation of p.

A: Let sample size = n Sample proportion = p̄

Q: freedom, the standard devi

A: yes , standard deviation of population is estimated without the degree of freedom . We know that…

Q: Given that the mean and standard deviation are $24 and $3. Calculate the variance.

A:

Q: What is the Standard Deviation?

A: You want to know about standard deviation.We will deeply understand the meaning of standard…

Q: The standard deviation of a sample is 3.0 and the standard error is -16.52, what was the original…

A: