d. To estimate p with E = .03, 95% confidence, andp thought to be approximately .70

Q: magine that I want to conduct a survey to find out how many households have at least one cat. If I…

A: It is given that margin of error (E) is 0.10 and the confidence level is 0.80.

Q: 2. Given: n=80, a = 15, level of confidence is 92%. What is the margin of error of the given data?

A:

Q: d. ta and n = 8 for the 95% confidence interval for the mean. e. te and n= 21 for the 85% confidence…

A: Given that  d) Confidence level = 95% = 0.95 Sample size (n) = 8   We know that  Degrees of freedom…

Q: A confidence interval was found to be (2.4, 7.9). What was the point estimate? O A. 5.27 O B. 5.2 O…

A: Given confidence interval is (2.4 , 7.9)Upper limit =7.9Lower limit =2.4

Q: se the given degree of confidence and sample data to construct a confidence interval for the…

A:

Q: Find a 95% confidence interval for a mean, µ, where n = 324, x̄ = 2.7, s = .91, and se = .06.

A: Given: n = 324, x̄ = 2.7, s = .91, se = .06.

Q: d/ Find the standard deviation of all the data values. e/ Does the confidence interval calculated in…

A:

Q: se the sample data and confidence level given below to complete parts​ (a) through​ (d). A research…

A: Consider that p is the true population proportion of the respondents who felt vulnerable to identify…

Q: Use the confidence level and sample data to find a confidence interval for estimating the population…

A: Obtain the 98% confidence interval for the population mean. The 98% confidence interval for the…

Q: A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size…

A: From the provided information, Margin of error (E) = 0.04 Confidence level = 90%

Q: Of 600 students sampled, 480 said they hoped to own a house someday. With 95% confidence, what is…

A: It is given that  Sample size, n = 600 Favourable cases, X = 4 Sample proportion, p^ = X/n  =…

Q: A 95% confidence intervel for the proportion of U.S. adults enjoying work from home is…

A:

Q: At 95% confidence, how large a sample should be taken to obtain a margin of error of 0.08 for the…

A: From the given information, Margin error ( E ) = 0.08 Assume sample proportion = 0.5   The objective…

Q: Find tα/2 when  n = 25 for the 95% confidence interval for the mean.

A: It is given that, the confidence level is 0.95.

Q: x=111, n=194, Confidence level = 99%

A: The sample proportion of p is, p^=xn=111194=0.5722 Computation of critical value:…

Q: A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size…

A: GivenMargin of error(E)=0.03confidence level(c)=99%α=1-0.99=0.01α2=0.05zα2=z0.05=1.6449   (from…

Q: For a distridution Bowley's coefficient of skewness is – 0.56, Q = 16.4 and median = 24.2. What is…

A:

Q: A 99% confidence interval (with n = 1, 018) estimates the actual mean amount of internet usage a…

A:

Q: f n=18, x = 33, and s = 8, find the margin of error at a 80% confidence level Give your answer to…

A: Given data n = 18 x =33, s= 8 Confidence level c = 0.8 α = 1- 0.8 = 0.2

Q: FIND t a n = 15 for the 98% confidence interval for the mean.

A: Provided information that, n=15 Alpha (α)=1-0.98=0.02 α/2=0.01

Q: A doctor wants to estimate the mean HDL cholesterol of all​ 20- to​ 29-year-old females. How many…

A: Given: Margin of error (E) = 2 Confidence level = 0.99 Therefore, α=1-0.99=0.01 Standard deviation…

Q: wishes the estimate to be within 0.04 with 95% confidence if (a) she uses a previous estimate of…

A: We have to find what size sample should be obtained if she wishes the estimate to be within 0.04…

Q: d. Construct a 95% confidence interval estimate. How does this change your answer to part (b)?

A: Given that Sample size n = 50 Sample mean = 0.987 Population SD = 0.02 The critical value of Z at…

Q: Which of the following indicates a confidence interval? a. 0.95              b.99%               c.…

A:

Q: c. Find the confidence interval for the population mean with confidence level of 99%

A:

Q: At 95% confidence, how large a sample should be taken to obtain a margin of error of 0.05 for the…

A: From the given information, Margin error ( E ) = 0.05 Assume sample proportion = 0.5   The objective…

Q: (d) Develop a 95% confidence interval for this population proportion. (Round your answer to four…

A: The point estimate of proportion of respondent who lack confidence they will be able to afford…

Q: Given that s.e.(b) = 61 and the estimate is 32, what is the t-stat?

A: GivenSEβ=61Estimate(β)=32

Q: With 95% confidence, what is the margin of error when estimating a population mean when n = 100 and…

A:

Q: d. Compute the first and third quartiles. e. Which measure, the mean or median, is a better measure…

A: The data can be sorted in ascending order as: 28, 29, 30,39, 41, 48, 48, 49, 51, 62

Q: How many people should I poll to guarantee the actual error on qn is less than e, with 90%…

A: Given we dont know p, we use p = 0.5 to get a conservative value of the sample size as for p =0.5,…

Q: 4) Out of the 440 people surveyed, a 110 said they listen to Spotify at least one a month. With the…

A:

Q: 1. Use the Student's t-Table to locate the value oft under the following conditions. 2. The sample…

A: 1) Sample size , n  = 12 Degrees of freedom  = n-1 = 12-1=11 Confidence level = 0.95 significance…

Q: 1. Given: n=130, a = 25, level of confidence is 90%. What is the margin of error of the given data?

A: The sample size is given as 130, n=130 The standard deviation is given as 25, σ=25 The Confidence…

Q: is: n=217, x 26.5 hg, s= 6.1 hg. Construct a confidence interval estimate of the mean. Use a 99%…

A: Given that  Sample size(n) = 217 sample mean (x¯) = 26.5 Sample standard deviation (s) = 6.1…

Q: Use the given degree of confidence and sample data to construct a confidence interval for the…

A: Given data,n = 85x = 49 Sample proportion(p) = xn =4985=0.576Ƶ-value at 98% confidence is Ƶc = 2.326

Q: Given that the mean = 20 and the standard deviation o = 4, find P(x < 25).

A: Mean is 20 and the standard deviation is 4.

Q: At 95% confidence, how large a sample should be taken to obtain a margin of error of 0.08 for the…

A: We have given that  Margin of error =E = 0.08 95% confidence interval.

Q: Before working with percentages in confidence intervals and hypothesis tests for p, change them to…

A: Confidence or testing formula always given in proportion form.

Q: A researcher wishes to estimate the percentage of adults who support abolishing the penny What size…

A:

Q: find the value: t a 2 and n = 15 for the 98% confidence interval for the mean.   t a 2 and n= 20…

A: a) Degrees of freedom=n-1=15-1=14   Then, at 98% confidence level, the value of t is 2.624. (From…

Q: How many people should I poll to guarantee the actual error on pN is less than e with 90%…

A:

Q: A researcher wishes to estimate the percentage of adults who support abolishing the penny . What…

A:

Q: If a 95% Confidence for the Population Proportion is (0.56, 0.78), fınd its Margin of Error.

A:

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

A:

Q: A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size…

A: a) Given that: p= previous estimate = 32% =0.32 e= error= 3%=0.03 z=critical value for confidence…

Q: C. FIND t a n = 15 for the 98% confidence interval for the mean.

A: Given problem is :

Q: e. FIND t a n= 20 for the 95% confidence interval for the mean.

A: Given: Confidence level = 95%c=95%=0.95n=20

Q: The scores on the Wechsler Adult Intelligence Scale are approximately Normal, with ?=100μ=100 and…

A: Given dataMean = 100Standard deviation = 15Probability of scoring less than 130 is given by

Q: The next day, you measure 0.077 ± .0008 µg/mL. To 95% confidence, is this an outlier? Should you be…

A: From the question 1,  The level 1 data values are, 0.0899-0.0008=0.0891 0.092-0.002=0.09…