. Find the length of the confidence interval, given the following data: s= 6.5, n = 15, confidence level = 99 %

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A: Given Sample size n=49, sample mean x̄=21, standard deviations s=6.2

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Q: The amount of fat (in grams) and the number of calories in 7 beef sandwiches at McDonalds were…

A: Solution:  The estimated regression equation is  Calories^= 110 + 15 Fat

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Q: Identify which sampling method is applied in the following situations. 1. The teacher randomly…

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Q: = Pq N- n N-I N: populati

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Q: The piston diameter of a certain hand pump is 0.4 inch The manager determines that the diameters are…

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Q: The number of calories and the number of milligrams of cholestero sample of fast-food chicken…

A: given, independent variable  (x)  = calories  dependent variable (y) = cholesterol

Q: dentify if each statement is TRUE or FALSE. True A Pearson's Product Moment Correlation coefficient…

A: Identify if each statement is TRUE or FALSE.

Q: A statistics class with 60 students were given an examination and the results are shown below. 73 57…

A: Results of 60 students were given, we need to make a frequency distribution table.

Q: n ordinary (fair) coin is tossed 3 times. Outcomes are thus triples of "heads" (h) and "tails" (1)…

A: Solution: Let N be the random variable counting the number of heads in each outcome From the given…

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A: Given that  Sample sizes n1=120 , n2=137 Favorable cases x1=251 , x2=312

Q: Let p be the population proportion of correct polygraph results. Identify the null and alternative…

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Q: (a) Consider a t distribution with 17 degrees of freedom. Compute P(-1.86<t<1.86). Round your answer…

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A: Given that  Sample size n =39 Sample mean =83 Standard deviation =5 NOTE:- According to bartleby…

Q: The local coffee shop keeps track of how much coffee they sell versus the temperature on that day,…

A: We have given the following data.

Q: A businessman is considering investing in the small business. A random sample of 40 companies…

A: Givensample size(n)=40Mean(x)=5.4%=0.054standard deviation(s)=1.8%=0.018

Q: Assume that you have a sample of n₁ = 8, with the sample mean X₁ = 42, and a sample standard…

A: Assume that you have a sample of n₁ = 8, with the sample mean X1 = 42, and a sample standard…

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Q: The lifetime in hours of a transistor is a random variable having probability function given by f(x)…

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Q: find the probability that of 10 such patients recently admitted to a hospital, fewer than half are…

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Q: Let x be a random variable that represents the percentage of successful free throws a professional…

A: Given X = 52 58 54 57 86 79 Y = 68 46 68 67 70 87

Q: A health researcher computed 90%, 95%, 98%, and 99% confidence intervals for the proportion of…

A: Given that a health researcher computed 90%, 95%, 98%, and 99% confidence intervals for the…

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Q: If we wanted to test whether the average number of errors made by those who drank ethanol differed…

A: Test is that whether the average number of errors made by those who drank ethanol differed…

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Q: Table 1 A hospital conducted a study of the waiting time in its emergency room. The hospital has a…

A: Solution: Given information: k= 4 groups  Each group has 15 observation:…

Q: Q21 An environmental researcher claims that the mean fluoride content of tap water in UAE does not…

A: Given  population mean μ=0.7

Q: .The group of students had the test on Statistics. The following student's blood pressure results…

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Q: ean relative increase in stock price was about 0.89%, with a standard deviation of 0.17%. Suppose…

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Q: Suppose that you are offered the following "deal." You roll a six sided die. If you roll a 6, you…

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Q: Direction: Complete the following statements. _____________ is a point on the test distribution…

A: According to policy, we supposed to answer first question, kindly repost remaining question.

Q: write an analysis for the data above and what does the p value mean?

A: From the given information we find the solution.

Q: Referring to Table 1, the appropriate null hypothesis is ________.   Question 1 options:   1)  at…

A: The number of locations is 4.

Q: A company surveyed 200 families and asked on how much electric bill they pay monthly. The average…

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Q: Suppose we wish to test whether the mean amount of lead in drinking water in UAE is less than 15…

A: Claim : The mean amount of lead in drinking water in UAE is less than 15 mcg/L.

Q: A random sample of 11 statistics students produced the following data, where x is the third exam…

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Q: exam with µ = 52, a person has a score of X = 44. Which value for the standard deviation would give…

A: From the given information we find the solution.

Q: In 2003, an organization surveyed 1,510 adult Americans and asked about a certain war, "Do you…

A: We have given that,  For 2003 :- X1 = 1086 and n1 = 1510 For 2008 :- X2 = 580 and n2 = 1510 Then,…

Q: The average number of field mice per acre in a 5-acre wheat field is estimated to be 10. Find the…

A: a) The problem follows Poisson Distribution with mean 12       P(X&lt;7) = 0.0458