The margin of error is 6, with a sample standard deviation of 20 and 92% level of confidence. Step 1. What are the given? Step 2. What is the sample size needed by the researcher?

Q: The number of goals scored by a college soccer team for a given season are 4, 9, 0, 1, 3, 12, 3, 7,…

A: The population mean is, μ=∑xN=4+9+0+1+3+12+3+7+4+5+8+212=5812=4.8333 The population mean is 4.8333.

Q: Observe the values of the means and standard deviations in the four samples you gathered and list as…

A: Simple random sampling is the technique of selecting the in such a way that way each sample has an…

Q: n this scenario, what is the test statistic? A linguist believes the average age children learn a…

A: Given: n= 21.0 ,x̄= 9.2 ,s= 2.5 µ= 10.0 ,degree of freedom= 20.0

Q: A population has mean 49 and standard deviation 5. What is the data value that has a z-score of 2?…

A:

Q: Find the estimated standard error for the sample mean for n = 12 and SS = 3843. Nearest hundredths…

A: Given : n = 12  ss = 3843

Q: Imagine that you and four of your classmates have measured the density of air and recorded the…

A: Let X be an density of air kg/m3. Therefore, X=1.27,1.21,1.28,1.25,1.24 We have to find average,…

Q: If you have 100 people in your sample, what would be the degrees of freedom you use to calculate the…

A: Given, n=100 Degree of freedom(df)=?

Q: Suppose that 35% of all adults in a population would say "good" and 65% would say "bad" if they were…

A: Given Data: p=0.35 n=1000

Q: What is the formula for a deviation score from a population?

A: Formula :

Q: We have provided simple data sets for you to practice the basics of finding a a. population mean. b.…

A: Solution: a. Let X be the random variable. The given data is 1, 2, 4, and 4

Q: Consider a sample with data values of 27, 25, 20, 15, 30, 34, 28, and 25. Compute the 30th, 25th,…

A: Solution : Sort the data values from smallest to largest : 15, 20, 25, 25, 27, 28, 30, 34 here n =…

Q: Suppose a variable is normally distributed. What percentage of scores fall between one standard…

A:

Q: 1. Find the mean, the variance and the standard deviation for the data. {18, 18, 19, 18, 18, 25, 29,…

A: Given data is : 18,18,19,18,18,25,29,30,26,19 To find mean, standard deviation, and variance.

Q: Find the estimated standard error for the sample mean for n = 16 and SS = 3922. Nearest hundredths…

A: We find the standard error using the formula

Q: noat question Assuming a normal curve, find the highest Z score a person could have while being in…

A: Given that  A) P(Z < a) = 32% B) P(Z < b) = 6%

Q: Find the estimated standard error for the sample mean for n = 10 and SS = 3896. Nearest hundredths…

A:

Q: The mean and standard deviation of a population are 200 and 20, respectively. Sample size is 25.…

A:

Q: 4. For the following data, find the sample variance and sample standard deviation: -6, 6, 6, 0, -6,…

A:

Q: A population has mean 27 and standard deviation 12 . What is the data value that has a z-score of -2…

A: Given data, Mean=27 sd=12 z=-2 x=?

Q: a commuter travels many miles to work each morning she has timed this trip 5 times during the  last…

A:

Q: The state test scores for 12 randomly selected high school seniors are shown on the right. Complete…

A:

Q: The standard deviation of a sample was reported to be 4. The report indicated that (x-x)² = 336.…

A:

Q: You are given n = 5 measurements 2, 1, 1, 3, 5. Find the sample standard deviation

A: Given data : 2,1,1,3,5

Q: Beth scored 88 on a nutrition test.  The class mean was 81 and the standard deviation was 3.2.  What…

A: Mean = μ = 81 Standard deviation = s = 3.2 Where, X= 88

Q: The grade point averages (GPA) for 12 randomly selected college students are shown on the right.…

A: Given: n=12 a) Sample Mean=∑xn=2.5+1.9+2.4+0.4+3.3+0.7+1.4+2.1+2.9+4.0+3.8+3.212=28.612=2.38…

Q: Question heip A population has a mean u= 80 and a standard deviation o = 21. Find the mean and…

A: If the sample size is large then the sample mean is approximately normally distributed. The sample…

Q: The mean and standard deviation of a population are 400 and 40 respective. Sample size is 25. What…

A: It is given that the  The mean and standard deviation of a population are 400 and 40 respectively.…

Q: Find the estimated standard error for the sample mean for n = 13 and SS = 3639. Nearest hundredths…

A: It is given that n = 13 and SS = 3639.

Q: The highway mileage (mpg) for a sample of 8 different models of a car company can be found below.…

A: The data on highway mileage (mpg) for a sample of 8 different models of car company is given…

Q: What is the sample mean? What is the standard deviation?

A: Use EXCEL Procedure for finding the value of sample mean.   Follow the instruction to obtain the…