A random sample of 68 households was selected for a phone survey. The key question asked​ was, "Do you or any member of your household own a product from Company​ A?" Of the 68 respondents, 17 said yes and 51 said no.   a. Determine the sample​ proportion, p​ hat, of households that own Company A product. b. If the population proportion is 0.75​, determine the standard error of the​ proportion, use the formula sheet.

Q: Determine the sample size associated with the following formula. Remember to always round up to the…

A: Solution Answer is 112

Q: 12 o.ズ こ \-525000 to ) %31

A: We find value of Vs?

Q: There is a mound of g pounds of gravel in a quarry. Throughout the day, 300 pounds of gravel is adc…

A: According to question,  In a quarry there is mound of g pounds of gravel. Then  300 pound of gravel…

Q: While her husband spent 2½ hours picking out new speakers, a statistician decided to determine…

A: The complete solution and result is in images uploaded below. Thanks!

Q: Find the margin of error for the given values of​ c, o​, and n. c​=.95, o=2.8, n=100

A: Given  c=0.95 , o=2.8 , n=100

Q: The International Brotherhood of Slide Whistlers wants to conduct a survey to find what proportion…

A: Let COnfidence interval be 90% Zc=1.645 E=3%=0.03 p=0.5 n=?

Q: When estimating the population proportion, how large a sample is needed to be 95% confident that the…

A: Given:  The margin of error is equal to 0.05  Confidence Level : 95%  It is asked to compute the…

Q: The brand manager for a brand of toothpaste must plan a campaign designed to increase brand…

A: The formula for the sample size is as follows: Here,zα/2 is the critical value at 95% confidence…

Q: Find the margin of error for the given values of​ c, s, and n. c = 0.98, s = 2.8

A: c = 0.98, s = 2.8, n = 14

Q: mean. a. z= -2.00 b. z = +0.75 C. z= +1.00 d. z= -1.50

A: As per our guidelines, we are allowed to answer three sub-parts only Given the standard deviation ,…

Q: A researcher wishes to estimate the number of households with two cars. How large a sample is needed…

A:

Q: weight-loss program, and she had 15 individuals participating in the program. She weighed…

A:

Q: A programmer plans to develop a new software system. In planning for the operating system that he…

A: From the provided information, Confidence level = 99% Margin of error (E) = 5% that is 0.05 Assuming…

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A: Dependent and independent variable: The variable of interest, regarding which, the prediction is…

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A: The objective of this question is to estimate the proportion of tenth graders reading at or below…

Q: Q.3.5 Determine the average % mark obtained by all students for the English test. Use an appropriate…

A: Average provide the center value of the given set. The average is obtained by adding all the…

Q: Find the margin of error for the given values of c,  and n. C =0.90,  = 3.7, n=81

A: Given: C=0.90n=81σ=3.7 From the Standard Normal Table, the value of z* for 90% level is 1.645. The…

Q: A telecommunications company conducted a survey about cell phone companies. Of the 1800 randomly and…

A:

Q: new soft drink is being market tested. It is estimated that 60% of consumers will like the new…

A: Here we want to find standard error.

Q: ate Kobe was 6'6" (or 78 inches).  Suppose the average height of men is 5'9" (or 69") and SD is 3".…

A:

Q: The brand manager for a brand of toothpaste must plan a campaign designed to increase brand…

A: Given information- Margin of error, E = 7% = 0.07 Confidence level, c = 80% Since nothing is known…

Q: The boxplots below show the number of marshmallows in a bag, as estimated by students in two…

A: Given information: The boxplots for the number of marshmallows estimated by students in two…

Q: According to the results of a survey, 36% of 617 people indicated that American football is their…

A: The formula for the sample size is as given below: n=p1-pZα2E2 Here, zα/2 is the critical value at…

Q: Actually use drugs 11 Do not use drugs Total Test "positive" Test "negative" 2 13 4 370 374 Total 15…

A:

Q: In Oregon, 24.9% of the 1.998 million dosages given have been to people whose vaccination is…

A: Given that  In Oregon, 24.9% of the 1.998 million dosages given have been to people whose…

Q: Jennifer wants to estimate the percentage of parents that use cloth diapers. She asks a randomly…

A: Solution: It is given that Jennifer wants to estimate the percentage of parents that use cloth…

Q: A quality-conscious disk manufacturer wishes to know the fraction of disks his company makes which…

A:

Q: A researcher wishes to estimate the proportion of corporate executives whose annual salary is over…

A:

Q: A programmer plans to develop a new software system. In planning for the operating system that he…

A:

Q: An environmentalist wants to find out the fraction of oil tankers that have spills each month. Step…

A: Sample size n=549Favorable cases x=98

Q: An environmentalist wants to find out the fraction of oil tankers that have spills each month.…

A: The objective of this question is to estimate the proportion of oil tankers that had spills. This…

Q: Find the margin of error for the given values of C, s, and n. C = .98, s= 4, n = 14.

A: C = 0.98 s = 4 n = 14

Q: Given : Find r12,.4 =.6 ľ13.4 =.5 23.4 =.7 r12.34 and r13.24

A:

Q: Use the expression in the accompanying discussion of sample size to find the size of each sample if…

A: Given: The level of confidence is 90%. Let M.E represents the margin of error. The margin of error…

Q: A random sample of medical files is used to estimate the proportion p of all people who have blood…

A:

Q: dad holds five coins in his hand. He tells his son that if he can guess the amount of money he is…

A: GivenA dad has five coins in his hand son gusses that dad is holding 81 centsbut dad is holding 90…

Q: Coal is carried from a mine in West Virginia to a power plan in New York in hopper cars on a long…

A: Note: Thank you for the question. Since the complete information is missing in the question, it is…

Q: The FBI wants to determine the effectiveness of their 10 Most Wanted list. To do so, they need to…

A: Given n=716 x=279

Q: If someone's diastolic pressure is above average, would you expect that person's systolic pressure…

A: (c )   Determine the value of correlation.   Follows the below instructions to obtain the value of…

Q: The proportion of eligible voters who will vote for Shaun Spicer in the next Presidential election…

A:

Q: Before the 2008 presidential campaign, the Gallup Poll asked a sample of 1,000 people for whom they…

A: Given data, n=1000 p=52%=0.52   Let the confidence interval be 95% z-value at 95% confidence is…

Q: What is the average miles per gallon (mpg) for all new cars? Using Consumer Reports, a random sample…

A:

Q: Prof. Leen wants to estimate the more than 92% percent of adults living in a large city have cell…

A:

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.