If n=15, ¯xx¯(x-bar)=37, and s=9, find the margin of error at a 80% confidence level Give your answer to two decimal places.

Q: The claim is that the proportion of peas with yellow pods is equal to 0.25 (or 25%). The sample…

A: Given information- Population proportion, p = 0.25 Sample size, n = 460 No. of success, x = 103…

Q: If you have a z-score of 4.00 and the body proportion is .99997 and the question is asking for the…

A: The z-score is given by 4.

Q: A manufacturer of golf equipment wishes to estimate the number of left-handed golfers. How large a…

A: Given,          Sample proportion  P∧=0.09          Margin of Error∈=0.04          and…

Q: he highway department is testing two types of reflecting paint for concrete bridge end pillars. The…

A:

Q: A sample of n = 9 college students is used to evaluate the effectiveness of a new Study Skills…

A: Given that, A sample of n = 9 college students is used to evaluate the effectiveness of a new Study…

Q: A sample has SS= 20 and s2 =4. How many scores are in the sample?

A:

Q: The 18 red room subjects had an average solve time of 10.13 seconds with a standard deviation of…

A: Formula :

Q: In a poll about work, 68% of respondents said that their jobs were sometimes or always stressful.…

A:

Q: a pollster wishes to estimate the number of left-handed scientists. How large a sample is needed in…

A: Given P=0.09 E=0.06 Z(0.01)=2.33

Q: A doctor at a local hospital is interested in estimating the birth weight of infants. How large a…

A: Given information- Standard deviation (s) = 7 ounces Error (E) = 2 ounces The margin of error…

Q: tion, the standard distance between a sample mean and the population mean is 5 points for samples of…

A: The formula of standard error: SE=sn Now,  the standard distance between a sample mean and the…

Q: Ms. Cruz wants to know the average weekly allowance of the grade 10 students. She randomly asked 50…

A: Parameter :  The parameter is a single value and it describe about the whole population.…

Q: On average, a sample of n = 36 scores will provide a better estimate of the population mean than a…

A: We have to identify trueness of statement.