7. Find the value of Za/2(critical value) that corresponds to a confidence level of 89.48%.

Q: What is the critical t-value (found in the t-table) if you are making a 90% confidence interval with…

A: Confidence level=90%Sample size(n)=20

Q: ou want to compute a 90% confidence interval for the mean of a population with an unknown population…

A: Given data, n=20 α=0.10

Q: FIND A 90% CONFIDENCE INTERVAL FOR THE DIFFERENCE IN POPULUTION PROPORTIONS Pf -Pm  round your…

A: Given:  n1=100, n2=50, p1^=0.24, p2^=0.43 We find the 90% C.I. for the difference in population…

Q: 1. Determine the critical value (z*) you would use to create a 94% confidence interval.

A:

Q: Describe the Interpretation of Confidence Intervals for μ1 – μ2.

A: The formula for Confidence interval for mean difference is given by,

Q: i found the z value of 0.8563 from standard normal table is (0.22+0.21)/2=0.215. So the p-value is…

A: The calculation of the new confidence interval using the z-table is shown below. The new confidence…

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

A: The information provided in the question are as follows : Margin of error (E) = 2 Standard deviation…

Q: Find the margin of error at 94% confidence interval for n=347 and p = 0.42 Give your answer to three…

A:

Q: would be content with 95% confidence. How does the decrease in confidence affect the sample size…

A:

Q: Find the critical values Zc that corresponds to an 82% confidence level.

A: The confidence level is 82%.

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

A: The standard deviation is 14.7, margin of error is 2, and confidence level is 99%. From the critical…

Q: A confidence interval for μ1 − μ2 can be constructed, write down the expression.

A: Confidence interval: Confidence interval is the interval estimate of the population parameter. It is…

Q: A 95% confidence interval for μA -μg is given by (-2.3, 4.5). What can we infer from this confidence…

A: A confidence interval is a range of values, derived from a data set, that is likely to contain the…

Q: Find the critical value v a/2 that corresponds to the given confidence level 87% ?

A: Given Confidence level 87%

Q: Find the CRITICAL VALUE of zα/2 that corresponds to a confidence level of 83.33%.

A:

Q: Please do not give solution in image format thanku In a regression study, a 95% confidence interval…

A: 95% confidence interval for the coefficient(-3.15, 1.01)

Q: Which of the below Z scores is the appropriate z* when calculating a 98% confidence interval? (a) Z…

A: We hvae to find corrcet answer..

Q: 4. Computers in some vehicles calculate various quantities related to performance. One of these is…

A: From the provided sample observations, Mean miles per gallon (μ)=∑Xin ,where Xi is the…

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

A: Confidence level: C=0.8948

Q: Find the margin of error at a 80% confidence level for estimating the population mean if n=11,¯x=39…

A: Givenn=11x=39s=6

Q: Find the critical value Z a/2 for the 92% confidence interval.

A: We have given information, The confidence level is C=0.92. Here we have to obtain critical value of…

Q: Use paired t-interval procedure to determine a 90% confidence interval for the difference between…

A: The data is (X, Y) = (49.3, 49), (43.2, 42), (50.4, 50), (36.3, 37), (52.3, 50)

Q: In a city, out of 200 people sampled, 146 had kids. Based on this, construct population proportion…

A:

Q: Determine the critical value za/2 that corresponds to 92% level of confidence. Round answer to…

A: Solution: From the given information, the confidence level is 0.92.

Q: calculate t value if df is 24 and  95% confidence interval

A: Given Information: Degrees of freedom df=24 Confidence level = 95% = 0.95 Significance level…

Q: What is tα/2,df for a 95% confidence interval of the population mean based on a sample of 15…

A: Solution: We have to find the t-critical value (tα/2) at the given significance level 1- 0.95=0.05…

Q: A survey conducted by Sallie Mae and Gallup of 1250 respondents found that 875 students paid for…

A: Solution: Given information: n= 1250 Sample size of respondentsx= 875 students paid for their…

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

A:

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

A: Given information: Confidence level=0.99 and 0.95. Margin of error(E)=2 points. Sample standard…

Q: Estimate the mean and the 95 % confidence interval.

A: The observed data for testing the lifetime of light bulbs (in hours) is as follows;1020, 1350, 1559,…

Q: How can I find ta/2 for a confidence level of 90% when n=6

A: Using t-table: Refer to t-table to find corresponding to find with confidence level of 90% with…

Q: What is Confidence Intervals for μ1 − μ2?

A:

Q: Find the critical value z/2 that corresponds to the confidence level 91%. Za/2 = (Round to two…

A: Solution: From the given information, the confidence level is 0.91.

Q: what is the 90% confidence interval of the standard deviation where n= 20 and s=40.5

A:

Q: A random sample of newborn baby boys were weighed. x = 6.7 lb s = 1.3 lb n = 79 1. What is the point…

A:

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

A:

Q: Develop a 99% confidence interval of the difference between the mean annual cost of attending…

A: 99% confidence interval of the difference between the mean annual cost of attending private and…

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

A:

Average

In mathematics, everyone must have heard the term average in one place or other. Almost all types of calculation require taking out an average. In everyday life, the term is used for denoting a certain amount that can be said to be a typical quantity for multiple people or objects. In other words, if a group of people possesses a certain object, then the average gives us an idea regarding the quantity of the object possessed by each person. However, this is solely based on mathematical calculation. It is important to note that most people will not strictly have the average value in a group.