ational polling organization wants to be 95% confident that its estimate of the percent of registered voters who say they plan to vote for a particular candidate will be within three percentage points (.03) of the true proportion that plan to vote for them.  Suppose we have a desired margin of error m. We can figure out what sample size we would need to have our margin of error be that small What if we want a smaller margin of er

Q: Suppose the true proportion of voters in the county who support a new fire district is 0.42.…

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Q: 2) Assume the p=.03 (3%). How large a sample is needed to estimate the proportion of breast cancer…

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A: Givenapproximation of p = 0.5Margin of error(E)=0.01confidence level = 95%

Q: Your professor wishes to estimate the proportion of high school students enrolled in college-level…

A: Given: margin of error of 3.5 percent 99% confidenp p= 18.3%

Q: It is known that 40% of all customers at a service station pay with a credit card. If a random…

A: Given  p=0.40, x=75, n=200

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

A: For the given data n =?

Q: Suppose that you wish to find a population proportion p with accuracy ±2% with 99% confidence. What…

A:

Q: 1) Assume the p=.03 (3%). How large a sample is needed to estimate the proportion of breast cancer…

A:

Q: Suppose the true proportion of voters in the county who support a specific candidate is 0.54.…

A: The proportion of voters in the country who support a specific candidate is =0.54.The sample number…

Q: Determine the minimum sample size needed if we want to estimate the population percent of students…

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Q: Suppose that we wanted to estimate the true average number of eggs a queen bee lays with 99%…

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Q: A researcher wishes to estimate, with 93% confidence, the percentage of people who own a home…

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Q: Suppose the true proportion of voters in the county who support a school levy is 0.65. Consider the…

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Q: Suppose 55% of people in Georgia support a special transportation tax. Alejandro is not confident…

A: Given data, p=55%=0.55 To investigate the claim, he surveys 150 people in his community and…

Q: A Plitical pollster wants to know what proportion of voters think james burger should go away and…

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Q: The sample size is 5, the intercept is negative and the slope is positive.    a. True   b. False

A: Given: n=5 intercept = -ve slope = +ve

Q: Prof. Gersch constructs a 95% CI for an unknown population mean. If Prof. Gersch instead wants to…

A: We have to find correct answer from given options..

Q: 1. The Sports Associates Vending Company supplies refreshments at a baseball stadium and must plan…

A: X Frequency 4 13 5 22 6 20 7 34

Q: Example 11.A company engaged in selling ballpoint pens wishes to estimate the proportion of people…

A:

Q: The XYZ Corporation is interested in possible differences in days worked by salaried employees in…

A: applying one way ANOVA on above data:   Mean n Std. Dev Variances budgets 257.4 5 11.7388…

Q: Suppose the true proportion of voters in the county who support a specific candidate is 0.61.…

A: The mean of the sampling distribution of the proportion is given by; μp=p The standard error of the…

Q: should their sample size be?

A: here use solvin's formula

Q: Suppose the true proportion of voters in the county who support a specific candidate is 0.57.…

A: The mean is calculated by averaging all the observations. It is eventually calculated by summing all…

Q: The XYZ Corporation is interested in possible differences in days worked by salaried employees in…

A: The question is about ANOVAGiven :To find :Are the mean annual attendance rates the same for…

Q: Suppose the true proportion of voters in the county who support a new fire district is 0.35.…

A: the pdf of normal distribution is = 1/σ * √2π * e ^ -(x-u)^2/ 2σ^2standard normal distribution is a…

Q: A television sports commentator wants to estimate the proportion of citizens who​ "follow…

A: Given Data: Margin of Error=0.22 p=0.54   z-value=1.96

Q: In a random sample of 82 professional actors, it was found that 45 were extroverts. Let p represent…

A: Let  X be number of extrovert out the number 'n'Then Proportion of extrovert ( )=

Q: A random sample of 72 households was selected for a phone survey. The key question asked​ was, "Do…

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Q: When determining sample size for a proportion, we need to know p. If we have no prior information…

A: When determining sample size for a proportion, we need to know p.

Q: Your state is considering raising the legal age for consumption of alcoholic beverages to 21 years…

A: p = 0.5 Margin of error = 0.01

Q: Suppose a certain Statistics instructor wants to estimate the proportion of students who enjoy…

A: since estimate for proportion is not known therefor we take p⏞=0.5 margin of error=E= 0.03 level of…

Q: A community is considering raising funds to pay for improvements to the community swimming pool. To…

A: Here given community leader survey patrons of community pool on Saturday afternoon

Q: Suppose the true proportion of voters in the county who support a school levy is 0.39. Consider the…

A: Sample proportion is defined as the ratio of number of units that are favourable to a characteristic…

Q: The population median is  a. All of the above b. None of the above  c. A measure that is easily…

A: Median: The median is the value of the middlemost observation in the data set when the observation…

Q: For a positively skewed histogram,

A: A right-skewed histogram has a definite relationship between its mean, median, and mode which is :…

Q: Your state is considering raising the legal age for consumption of alcohol beverages. How large a…

A: From the provided information, Margin of error (E) = 0.01 Confidence level = 99%

Q: If the population proportion is 0.7 . A researcher wants the margin of error to be 0.20 and the…

A: Given  pcap=0.7, Zcritical=1.96 at alpha=0.05 MOE=0.20

Q: Prof. Jacob wants to know, with 90% confidence, the proportion of students who like to eat in the…

A: Given, Confidence interval, α = 90 Sample proportion, p^ = 0.62 Margin of error, M.E = 0.025