You are task to determine the number of respondents of a large population on a survey done by your class and you want to be 99% confident allowing a +/- 3% margin of error. Using the Cochran's formula what is the desired sample size? (Write in whole number). What value represents the level of precision in the illustrated scenario? (Write in percentage)

Q: The Inter Quartile Range is the difference between the third and first quartiles. It describes the…

A: WE have to find given probability.

Q: Find the sample mean of the data. Be sure to include screenshot of Excel of your answers and…

A: 30 30 30 30 40 60 40 15 50 150 40 30 30 30 40 30 40 30 30 30…

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

A: We have given that                                        Margin of error (E) = 0.025 A 95%…

Q: Hi, Can you help me with this question? A survey of 600 non fatal accidents show that 261 involved…

A: We have given that,  Favorable cases (X) = 261 and sample size (n) = 600 Then,  We will find the…

Q: The sample mean of a dataset is 3.8 from 13 observations, calculate the sum of observations.

A: From the provided information, Mean of dataset (x̅) = 3.8 Number of observations (n) = 13

Q: SAMPLING VS. RELIABILITY: "The larger the sample,the more reliable the results." Do you agree or…

A: Sampling is the method that used to take sample from the population. There are different methods…

Q: Use the given confidence interval to find the margin of error and the sample mean. (6.59,10.23)…

A: The given confidence interval is (6.59, 10.23) The value of sample mean is

Q: you want to do a survey to help you estimate the true porportion of current students who have…

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Q: What are the steps for Finding Proportions for One Score?

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Q: In a singing contest, the scores awarded by eight judges were : 5.9, 6.7,6.8,6.5, 6.7, 8.2, 6.1, 6.3…

A: Given data: Mean = 6.65 Median  = 6.6 Mode = 6.7 To find: Which two scores may be omitted to leave…

Q: Determine whether the sample is biased or unbiased

A: Given a situation, we need to find whether it is biased or unbiased.

Q: Give 5 sample problems for Elimination of Arbitrary Constant (Differential Equation). Provide step…

A:

Q: You want to conduct a survey to determine the proportion of people who favor a proposed tax policy.…

A: The margin of error is computed by taking the product of standard error and critical value.

Q: A company gives the percentage of defective products as 6% or less. Use the sample below to…

A: Given: p0=0.06n=50x=5 The significance level is taken as 0.05.

Q: Explain the sample mean of the difference scores varies.

A:

Q: Consider any survey.  If you want to be specific, think about polling people if they prefer Coke or…

A:

Q: You are conducting a multinomial hypothesis test (a = 0.05) for the claim that all 5 categories are…

A: There is one categorical variable. It has 5 categories. The observed and expected values are given.…

Q: you wish to estimate the mean cholesteral levels of patients two days after they had a heart attack.…

A: Individual:The collected data which can be associated with a single element in the sample is called…

Q: you want to know how how arizonia workers age 16 or older travel to work. To estimate the percentage…

A: Individual:Collected data which can be associated with a single element in a sample is called…

Q: You want to estimate the percentage of statistics students who get grades of C or better. How many…

A: Obtain the sample size. The formula of sample size is, Obtain the area of probability in the right…

Q: Incomes of College Students’ Parents. A researcher wants to estimate the average income of parents…

A:

Q: Explain the relationships among the sample proportion, the number of successes in the sample, and…

A: Sample proportion: The fraction of number of members sampled which have a specified attribute and…

Q: why are we using the number of events=19 for the sample proportion part of the equation, instead of…

A: Let p be the population proportion of candies that are blue.Given that,Population proportion Sample…

Q: Identify the population being studied and the sample chosen. The final exam scores of 44 out of the…

A: Solution: Sample is the subset of population. Population is the entire set of units under study.

Q: You work for a consumer watchdog publication and are testing the advertising claims of a tire…

A: Given life spans are: 48,989   42,327   28,497    38,566    33,197    40,419   41,497…

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

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Q: Neck size The histogram shows the neck sizes (in inches)of 250 men recruited for a health study in…

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Q: What is the 84th and 22nd percentile and what is the 7th and 9th decile

A: Solution To find the percentile and decile we will use Excel