find tc for a 95% confidence level when the sample size is 6.

Q: Use the Student's t distribution to find t, for a 0.95 confidence level when the sample is 27.

A: sample size=n=27 Degree of Freedom=n-1=27-1 =26 Confidence level is 0.95 Therefore the Level of…

Q: Determine the point estimate of the population mean and margin of error for the confidence interval.…

A: We have to find given information from available data.

Q: Determine the point estimate of the population mean and margin of error for the confidence interval.…

A: Given, Lower bound = 18  upper bound = 26

Q: Your statistics instructor wants you to determine a confidence interval estimate for the mean test…

A: Given that x¯ =160,σ = 45 ,α=0.05

Q: Find the value of the sample size needed if the confidence interval is 95% that the sample…

A: Given that  Margin of error =E =0.04 Sample proportion p^=0.45

Q: You measure 41 watermelons' weights, and find they have a mean weight of 47 ounces. Assume the…

A: Given that: n= 41.0 , x̄= 47.0 s= 2.5 At 90.0 % confidence level , z score= 1.645 So, 90.0 %…

Q: The standard deviation of the weights of elephants is known to be approximately 15 pounds.  We wish…

A: Sample mean = x̅ = 244 Sample size = n = 50 Population S.D = σ = 15 Standard Error = σ/√n  =…

Q: A professor is trying to find the average exam grade in his class. The sample mean should be within…

A: It is given that confidence level is 0.90, standard deviation is 12 and margin of error E is 5.

Q: You want to estimate the mean time college students spend watching online videos each day.  The…

A:

Q: Suppose that the sample size had been​ 240, with x bar=4.1 and s=3.1. Use technology to find a​ 95%…

A: Sample mean = x̅ = 4.1 Sample size = n = 240 Sample S.D = s = 3.1 Standard Error = s/√n  =…

Q: if E=0.07 and population standard deviation=0.8 then find the sample size for 99% confidence…

A: Margin of error(E)=0.07 population standard deviation(σ)=0.8 confidence level=99%

Q: The confidence interval for a population porportion is (0.34, 0.5). What the the sample proportion…

A: Given  The confidence interval for a population proportion (0.34,0.5)  estimate the sample…

Q: Determine the margin of error for a confidence interval to estimate the population mean with n = 21…

A: n = 21  s​ = 12.6 confidence interval = 80%.

Q: Determine the point estimate of the population mean and margin of error for the confidence interval.…

A: Given               Lower Bound = 21               Upper Bound = 25 The point estimate of the…

Q: For a confidence level of 80% with a sample size of 24, find the t-score.

A: From the provided information, Confidence level = 80% Level of significance (α) = 1 – 0.80 = 0.20…

Q: Determine the point estimate of the population mean and margin of error for the confidence interval.…

A: We have given the lower bound 19 Upper bound is 23

Q: e confidence interval for a population mean is (240.53, 240.79). What are the sample mean and the…

A: The confidence interval for a population mean is (240.53, 240.79)WE HAVE TO FIND OUT THE MEAN AND…

Q: Find the value of za/2 that corresponds to a confidence level of 89.48%.

A: Confidence level: C=0.8948

Q: The 96% confidence interval for a population proportion is (0.36, 0.48). Using the confidence…

A: Answer: From the given data, The 96% confidence interval of a population proportion is: (0.36, 0.48)

Q: What is the confidence interval estimate for the population mean? If the sample mean is 13 and error…

A: Given information: The sample mean is, M = 13 The error bound for the mean is, E = 3.2 It is…

Q: A 95% confidence interval was found to be (14.312, 21.432). What is the margin of error? ME=

A: Answer: From the given data, 95% confidence interval was found to be (14.312, 21.432) lower limit =…

Q: using the confidence interval method, to test that population mean equals 14, a researcher obtains…

A: Solution: State the hypotheses. Null hypothesis: H0: µ=14. That is, the population mean is equal to…

Q: The mean GPA at a university is reported to be 2.69. A sample of 100 students at this university has…

A: The point estimate of population mean is sample mean.

Q: For an SRS of 66 students, the average exam score was a 73. Assume you know the population standard…

A: Given,Standard deviation(σ)=10margin of error(E)=1.0α=1-0.99=0.01α2=0.005Z0.005=2.58     (from…

Q: Calculate the point estimate. The mean and standard deviation of the blood sugar level of randomly…

A: Given:

Q: A sample of 700 from population A has a proportion of interest of 0.24 while a sample of 600 from…

A: Confidence Interval: The form of the confidence interval is, CI = Point estimate ± Margin of error…

Q: You are interested in studying whether students living in the dorms or students living off campus…

A: given information : n1=35,n2=50m1=5.7, m2=6.3s1=1.4 ,s2=1.3 for obtain 99% confidence interval first…

Q: The width of a confidence interval is a measure of its precision. The narrower the confidence…

A: The width of the confidence interval of a single population mean can be calculated using the…

Q: lculating the confidence interval.

A: x Freq 1 3 2 5 3 19 4 7 5 6 Total 40

Q: You measure 41 watermelons' weights, and find they have a mean weight of 79 ounces. Assume the…

A: Mean = 79Standard deviation = 2.4Sample size = 41

Q: the sample proportion of females is  x=118  n=164 P = .720  #1 Make a 95% confidence interval for…

A:

Q: If n = 380 and X = 304, construct a 95% confidence interval for the population proportion, p. Give…

A: Given: n = 380 x = 304

Q: What happens in a confidence interval if the size of the sample increases the length of interval

A: WIdth of a confidence interval = W Margin of error = E

Q: Determine tc for n = 15 and a confidence level of 99%.

A: From the given information, Sample size (n) =15, Confidence level (1-α)= 0.99 Thus, the t-critical…

Q: Determine the point estimate of the population mean and margin of error for the confidence interval.…

A: Lower bound=15, Upper bound=27

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.