1 a researcher wishes to estimate with 90 confidence the, Ask an Expert

Statistics

1. A researcher wishes to estimate with 90% confidence, the proportion of adults who have high-speed Internet access. He estimate must be accurate within 5% of the true proportion.

a) What is the minimum sample size needed using a prior study that found that 48% of the respondents said they have high-speed Internet access? (Round to nearest whole number.)

b) What is the minimum sample size needed assuming that no preliminary estimate is available?

(Round to the nearest whole number.)

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M91014863

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

Loking for guidancea normal population has a mean of mu

Looking for guidance: A normal population has a mean of μ = 100. A sample of N = 36 is selected from the population, and a treatment is administered to the sample. After treatment, the sample mean is computed to be = 106 ...

A doctor whats to exam prior medical records in an attempt

A doctor whats to exam prior medical records in an attempt to estimate the proportion of juvenile valley fever cases that escalated to spinal meningitis. He wants to estimate the proportion within 2% with 98% certainty. ...

Twelve different video games showing substance use were

Twelve different video games showing substance use were observed and the duration of times of game play? (in seconds) are listed below. The design of the study justifies the assumption that the sample can be treated as a ...

1 investment a will return to you 2011 in one year if you

1) Investment A will return to you $2011 in one year if you invest $1750 today. Investment B will return to you $3146 in one year. What is the most you will pay for Investment B? Round to the dollar.

A company designs a new laptop computer and wants to

A company designs a new laptop computer and wants to investigate customers' preferences with respect to three select laptop features. The features are Price (High vs. low) Processor Speed (Low vs. medium vs. high) Weight ...

1 if there are 150 values in a data set how many classes

1) If there are 150 values in a data set, how many classes should be created for a frequency histogram? A. 5 B. 6 C. 7 D. 8 E. 9 2) . If x is a binomial random variable where n = 100 and p = 0.2, find the probability tha ...

Based on the 1990 census the number of hours per day adults

Based on the 1990 census, the number of hours per day adults spend watching television is approximately normally distributed with a mean of 5 hours and a standard deviation of 1.3 hours. What proportion of the population ...

A foreign trader at the banks tx desk calls to inform you

A Foreign trader at the bank's TX desk calls to inform you that the company TD Bank is quoting $1.20/€1, and Bank of America is offering $1.40/£1. The trader also noticed thatCredit Z is also making the market in pound ...

A rainstorm in portland oregon wiped out the electricity

A rainstorm in Portland, Oregon, wiped out the electricity in 10% of the households in the city. Suppose that a random sample of 70 Portland households is taken after the rainstorm. Estimate the number of households in t ...

How would i calculate this to get the probability if a

How would I calculate this to get the probability. If a person bought 1 share of Google stock within the last year, what is the probability that the stock on that day closed at less than the mean for that year? Hint: You ...

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Statistics and Probability Expert