Use the confidence interval to find the estimated margin of error. Then find the sample mean. A store manager reports a confidence interval of (46.7,78.3) when estimating the mean price (in dollars) for the population of textbooks. The estimated margin of error is (Type an integer or a decimal.) The sample mean is (Type an integer or a decimal.)

Q: After 8 points are added to each score in a sample, the mean is found to be M = 40. What was the…

A: Let us have n number of scores in a sample. After adding 8 to each score sample mean will be M = 40…

Q: Construct the described data set. The entries in the data set cannot all be the same. The mean is…

A: It is needed to discuss about the mean.

Q: Jse the confidence interval to find the estimated margin of error. Then find the sample mean. A…

A: Solution: The given confidence interval is ( 3.0, 3.6) Lower limit= 3.0 Upper limit= 3.6

Q: A college counselor wants to determine if the number of hours spent studying for a test can be used…

A: An explanatory variable is the one which can be changed independently or what you manipulate or…

Q: Use the confidence interval to find the margin of error and the sample mean. (0.276,0.440) The…

A: Given information- We have given the interval = (0.276, 0.440) We know that- Confidence interval =…

Q: Angela wants to estimate the mean number of siblings for each student in her school. She records the…

A: Explanation:Here, estimate the mean number of siblings for each student in Angela school. Moreover,…

Q: Use the confidence interval to find the estimated margin of error. Then find the sample mean. A…

A: A confidence interval of population mean, µ, in terms of sample mean and margin of error, can be…

Q: tests, a term paper, and a final examination. Each test counts as 15% of the course grade. The term…

A:

Q: The average GPA of students in 2001 at a private university was 3.58. A survey on a sample of 200…

A: The mean is 3.61 GPA obtained from a sample of 200 students in spring semester of 2012 is known as…

Q: Use the confidence interval to find the margin of error and the sample mean. (.228, 0.390)

A: We know that the Margin of error = (upper_limit - lower_imit )/2 and Sample mean = (upper limit +…

Q: final grade, the final exam counts for 30%, the project counts for 10%, and homework counts for 20%.…

A:

Q: Use the confidence interval to find the margin of error and the sample mean.   (0.056,0.180)…

A: Given confidence interval  (0.056,0.180) calculate Margin of error and sample mean

Q: Use the confidence interval to find the estimated margin of error. Then find the sample mean. A…

A: Given confidence interval is (3.1, 3.7) We have to find the Margin of error and mean. We know that…

Q: Use the confidence interval to find the margin of error and the sample mean. (0.684,0.800) The…

A: Obtain the margin of error. The margin of error is obtained below as follows:   From the…

Q: Q2. Find the standard deviation for the data: 5,10,7,12,0,20 7

A: We have to find the standard deviation for the data: 5,10,7,12,0,20

Q: Suppose a biologist studying the mechanical limitations of tree growth monitors a national preserve.…

A: Given data is45,80,71,67,45,92,87,67,76,45

Q: The sample mean is the point estimator of 18

A:

Q: Use the confidence interval to find the estimated margin of error. Then find the sample mean.   A…

A: A confidence interval in terms of sample mean and margin of error, can be written as (x̄ ± ME),…

Q: want 95% confidence that your error is no more than 0.035.   The sample should include men and…

A:

Q: In a moderately skewed distribution, the value of Median is 42 and value of Mode is 40. Find the…

A: Given, x¯ =meanMo =mode=40Me = median =42

Q: Use the confidence interval to find the estimated margin of error. Then find the sample mean. A…

A: Given, A biologist reports a confidence interval (1.7,2.9 ) of when estimating the mean height​ (in…

Q: The mean score on the ACT test was 21.5 and the standard deviation was 5.0. The mean score on the…

A: ACT score μ1 = 21.5σ1 = 5.0x1 = 26SAT score μ2 = 515σ2 = 100x2 = 605 which score will relatively…

Q: Use the confidence interval to find the margin of error and the sample mean. (0.614,0.790

A: Given, Lower limit=0.614 Upper limit=0.790 margin of error=?

Q: 5. Two different 5th grade classes take the same test. In the first class of 50 students the mean…

A: Given the First class Sample size =50  Mean =70  Second class  Sample size =20  Mean =90 We have to…

Q: What is the p value if the mean is 98.6, n=7, t= -2.114?

A: The P-value is the probability that provides strong evidence in favor of the alternative hypothesis.…

Q: Find the deviations from the mean for the set of data: 26, 29, 22, 24, 24. Score 26 29 22 24 24…

A: Given Data is, 26,29,22,24,24 mean,x¯ =26+29+22+24+245=25

Q: Use the confidence interval to find the margin of error and the sample mean. (0.264,0.420) ......…

A: Given confidence interval is(0.264  ,  0.420)

Q: Homeruns In 1998, Mark McGwire hit 70 homeruns,to break the single season home run record of 61 home…

A:

Q: Please calculate the SD of a sample of 8 data points using the formula taught in class. The…

A: We hava given that, ΣX2 = 5012.2,   n = 8, x̄ = 24.0 Then,  We will find the standard deviation (SD)…

Q: In moderately asymmetrical distribution, the value of median is 42 and the value of mode is 40. Find…

A: Given: Median = 42 Mode = 40 Distribution is moderately asymmetrical

Q: A statistics practitioner took a random sample of 60 observations from a population whose standard…

A: Sample size, Population standard deiation, Sample mean,

Q: If the mean of a data set is 22 and the SD is 5, what % of the values fall between 12 and 27? Give a…

A: given that  mean of a data set is 22

Q: The line drawn within the box of the box-and-whisker plot represents the mean.   TRUE FALSE

A:

Q: Use the confidence interval to find the margin of error and the sample mean.   (.364,0.500)

A:

Q: The number of hours per week that the television is turned on is determined for each family in a…

A: Given that there are 24 families in the sample.  Mean=31 Median=27.2 7th percentile= 16 hours

Q: A clerk entering salary data into a company spreadsheet accidentally put an extra "0" in the boss's…

A: Solution Median is the middle value in the observations and the mean is the average of the values.

Q: Suppose that the mean score of a class of 34 students was 79. The 15 male students in the class had…

A: Given that the mean score of a class of 34 students was 79. The 15 male students in the class had a…

Q: Use the confidence interval to find the margin of error and the sample mean. (1.77, 2.01) The margin…

A: Margin of error= ?

Q: Juan makes a measurement in a chemistry laboratory and records the result in his lab report. The…

A: The standard deviation of students lab measurements is 8. Juan repeats the measurement 2 times. That…