A federal report indicated that 23% of children under age 6 live in poverty in Ohio, an increase over previous years. How large a sample is needed to estimate the true proportion of children under age 6 living in poverty in Ohio within 4% with 90% confidence? Round the intermediate calculations to three decimal places and round up your final answer to the next whole number. n=

Q: At least one of the answers above is NOT correct. It is estimated that approximately 8.27% Americans…

A:

Q: A charity holds a raffle in which each ticket is sold for $45. A total of 9600 tickets are sold.…

A: We have the following information: Each ticket sold for $45. Total no. of ticket sold = 9600. The…

Q: digits after the decimal in your calculations. Answers may vary slightly due to rounding. In a…

A: We have given that  Sample size n=726 Favorable cases x= 634 Sample proportion p^=x/n

Q: For this problem, carry at least four digits after the decimal in your calculations. Answers may…

A: The objective of this question is to find the point estimate for the proportion of women shoppers…

Q: Compute the p-value. Round to three decimal places.

A: Given Information,: We have number of sample n= 2027  Number of favourable x= 485 number of people…

Q: Compute the z-score of pitch with speed 98.6 mph. (Round your answer to two decimal places.)…

A: here given 4bseam fastball speed is normally distributed with mean 92.12 mph and standard deviation…

Q: In a population of ages where the mean age is 45 and the standard deviation is 5.25, what are the…

A: Given mean age = 45Standard deviation = 5.25The Z score with 0.0505 to its left is -1.64 and the Z…

Q: Construct a 95 % prediction interval for the height of a particular son whose father is 67…

A:

Q: A federal report indicated that 28% of children under age  6 live in poverty in Kentucky, an…

A: From the provided information, 28% of children under age 6 live in poverty in Kentucky that is p =…

Q: What proportion of students are accepted into Law School? You survey a random sample of 525 Law…

A:

Q: In a marketing survey, a random sample of 1016 supermarket shoppers revealed that 270 always stock…

A: Sample size = n = 1016 Sample number of events = x = 270

Q: A federal report indicated that 18% of children under age 6 live in poverty in Colorado, an increase…

A: Given information: The proportion of children under age 6 living is 18%. The margin of error is 3%.…

Q: The Psychology Club is trying to submit their budget for the semester to the Office of Student…

A: Since you have posted a question with multiple subparts, we will solve first three subparts for you.…

Q: A federal report indicated that 58% of children under age 6 lie in poverty  in Puerto Rico, an…

A:

Q: A federal report indicated that 18% of children under age 6 live in poverty in Iowa, an increase…

A:

Q: A federal report indicated that 13% of children under age 6 live in poverty in Minnesota, an…

A: compute sample size ( n ) = n=(Z/E)^2*p*(1-p)

Q: A report on consumer financial literacy summarized data from a representative sample of 1,669 adult…

A: Given data is appropriate for testing of hypothesis to test z-test for single proportion because it…

Q: Round the point estimate to the nearest thousandth. 368 randomly selected light bulbs were tested in…

A: Given Data Sample Size, n = 368 Number of successes, x = 94

Q: nesspeople for which the caller reaches the person being called on the first try. Id you include in…

A: From the provided information, Confidence level = 80% Margin of error = 0.03

Q: I don't know how to do part b of this question. Please help!!

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: Among 250 cell phone owners aged 18-24 surveyed, 103 said their phone was an Android phone. Perform…

A: n=250x=103

Q: uct a survey on your college campus to learn about the political awareness of students. You want to…

A: The critical value from standard normal table at 95% confidence level will be:

Q: A federal report indicated that 22% of children under age 6 live in poverty in South Dakota, an…

A: Given,sample proportion(p^)=0.22margin of error(E)=0.04α=1-0.90=0.1α2=0.05z0.05=1.645

Q: A federal report indicated that 29% of children under age 6 live in poverty in Arkansas, an increase…

A: The random variable is children under age 6 who live in poverty in Arkansas.The value of the…

Q: A federal report indicated that 29% of children under age 6 live in poverty in Arkansas, an increase…

A: The confidence level is 90%. Therefore, α = 0.10, α/2=0.05 and 1- α/2=0.95. Thus, zα/2 =1.645 (using…

Q: The Fox TV network is considering replacing one of its prime-time crime investigation shows with a…

A: sample size(n)=450No.of viewers would watch the new show(x)=200

Q: A federal report indicated that 11% of children under age 6 live in poverty in New Hampshire, an…

A:

Q: The state education commission wants to estimate the proportion of tenth-grade students in the state…

A: Confidence level=99%Margin of error(E)=5%=0.05Assuming the commissioner has no prior knowledge about…

Q: ee decimal places and round up your final answer to the next whole number.

A:

Q: Imagine a basketball team that comprises thirteen 15-year-old boys. The average height of the team…

A: Population mean()=67sample mean()=69.5Population standard deviation()=3.19sample  size(n)=13

Q: Statistics Canada wants to know the unemployment rate in Vancouver during any part of last year. How…

A: confidence level=90% Margin of error(E)=0.012

Q: A researcher claims that at least 10% of all football helmets have manufacturing flaws that could…

A: Given that, sample size is n= 200  snd X= 16  then proportion of football helmets with flaws is  p^…

Q: 1. What are the null and alternative hypotheses? Họ: p = 0.5000 - Ha: p> 0.5000 2. Calculate the…

A: Since there is no explicit information provided regrading sub-parts, we are allowed to answer first…

Q: cted and what is actually observed. They request funds for four categories of promotional items…

A: Note: “Since you have posted a question with multiple sub-parts, we will solve the first three…

Q: (a) Find a point estimate for the proportion of cell phone owners aged 18-24 who have an Androld…

A: It is given that Sample size n = 245 Number of cell phone owners with Android phone, X = 106

Q: A federal report indicated that 14% of children under age 6 live in poverty in New Jersey, an…

A: Given information- Margin of error, E = 5% = 0.05 Confidence level, c = 90% Since we have given that…

Q: A federal report indicated that 14% of children under age 6 live in poverty in New Jersey, an…

A:

Q: How large a sample is needed to estimate the true proportion of children under age 6 living in…

A: Here given  A federal report indicated that 11% of children under age  6 live in poverty in Utah, an…

Q: FOR THIS QUESTION, WOULD IT BE UNSUAL IF FEWER THAN 12 used GOOGLE? USE A CUTOFF OF 0.05

A: Answer:- Given,  P( use the Google search engine) = 70% = 0.70  Sample size, n = 22 and p = 0.70…

Q: Among the 1018 respondents, 54 said that cellular phones are “not at all annoying.” what percentage…

A: Let x is the percentage of respondents said that cellular phones are “not at all annoying”.

Q: A report on consumer financial literacy summarized data from a representative sample of 1,666 adult…

A: The information provided in the question is as follows :-The total number of  adult Americans in a…

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.