**10.24 Customer preferences for your new product.** A sample of 60 potential customers was asked to use your new product and the product of the leading competitor. After one week, they were asked to indicate which product they preferred. In the sample, 40 potential customers said that they preferred your product.a. Find the sample proportion.b. What is the margin of error for 95% confidence?c. Find the 95% confidence interval for the proportion of potential customers who prefer your product.

Answered: 10.24 Customer preferences for your new…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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I need part d
A magazine provided results from a poll of 500 adults who were asked to identify their favorite pie. Among the 500 respondents, 14% chose chocolate pie, and the margin of error was given as +5 percentage points. What values do p, q, n, E, and p represent? If the confidence level is 99%, what is the value of a? The value of p is The value of q is The value of n is The value of E is The value of p is
A consumer group wanted to determine if there was a difference in customer perceptions about prices for a specific type of toy depending on where the toy was purchased. In the local area there are three main retailers: W-Mart, Tag, and URToy. For each retailer, the consumer group randomly selected 5 customers, and asked them to rate how expensive they thought the toy was on a 1-to-10 scale (1= not expensive, to 10 = very expensive). The toy was priced the same at all retail stores. Compute the percentage of variance explained by the group differences for these data. Q: Percentage and variance explained = ?
A national survey of 2500 adult citizens of a nation found that 21% dreaded Valentine's Day. The margin of error for the survey was 4.4 percentage points with 90% confidence. Explain what this means. Which statement below is the best explanation? G O A. There is 90% confidence that 21% of the adult citizens of the nation dreaded Valentine's Day. O B. In 90% of samples of adult citizens of the nation, the proportion that dreaded Valentine's Day is between 0.166 and 0.254. O C. There is 90% confidence that the proportion of the adult citizens of the nation that dreaded Valentine's Day is between 0.166 and 0.254. O D. There is 85.6% to 94.4% confidence that 21% of the adult citizens of the nation dreaded Valentine's Day.
Construct a 90% confidence interval of the population mean age for the college students in Example #5 with the sample size increased to 30 students. Compare your answer with Example #5 (picture). a. Identify n, x̅, ?, and zc, and find E.b. Find the left and right endpoints of the confidence interval.c. Interpret the results and compare them with Example #5.
Use the sample data and confidence level given below to complete parts (a) through (d). A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n=931 and x=548 who said "yes." Use a 99% confidence level. LOADING... Click the icon to view a table of z scores. b) Identify the value of the margin of error E.
I need p, q, & n Thankyou !
Use the study below for Part A, Part B, and Part C. A soft drink company surveys 500 shoppers and finds that 61% of shoppers prefer diet soda to regular soda. Part A: With a confidence level of 90%, what is the margin of error? Show your work and round to the nearest hundredth.Part B: If the sample size would increase to 1,000 respondents while keeping the rest of the variables the same, what would happen to the margin of error?Part C: Support your answer to Part B by finding the margin of error if 1,000 shoppers were surveyed while keeping the rest of the variables the same. Show your
A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n=935 and x=561 who said "yes." Use a 95% confidence level.
Does it Make Sense? For Exercise 4 decide whether the statement makes sense (or is clearly true) or does not make sense (or is clearly false). Explain clearly. Not all of these statements have definitive answers, so your explanation is more important than your chosen answer 4. In an Adecco Staffing survey of 1,000 adults in the United States, 140 (or 14%) said that salary was the most important feature of their job. The sample proportion of 0.14 cannot be a good estimate of the population proportion because this survey is based on such a small proportion of the population of adults.
A new fertilizer was applied to the soil of 231 bean plants. 14% showed increased growth. Find the margin of error and 95% confidence interval for the percentage of all bean plants which show increased growth after application of the fertilizer. Round all answers to 2 decimal places. Margin of Error (as a percentage): Confidence Interval: % to %
Estimate the 95% confidence interval for the proportion of iPhone (Apple Inc.) users in your sample of 370 students. Briefly interpret your answer. Sample Proportion (in percentage form) Apple 72.70% Samsung 16.76% LG 1.35% Basic mobile phone 0.54% Other smartphone 8.65% Do not use mobile phone 0%

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