subject
Mathematics, 11.03.2020 06:13 dooderh

A public health researcher wishes to study the dietary behavior of residents in Durham County. The researcher randomly contacts 35 county residents and collects data on their daily sugar intake and obtained a sample average of 37.4 grams sugar per day and a sample standard deviation of 4.2 grams per day. The researcher would like to construct a 99% confidence interval for the mean daily sugar intake of residents in the county using the data. Which distribution should the researcher use when analyzing these data?a. The researcher should use a normal distribution because the data come from a simple random sample and the sample is large. b. The researcher should use a normal distribution because the true population average daily sugar intake is likely not near zero. c. The researcher should use a normal distribution because they do not know the true standard deviation of daily sugar intake in Durham county. d. The researcher should use a t-distribution because the sample size is too small to accurately calculate a 99% confidence interval using a normal distribution. e. The researcher should use a t-distribution because they do not know the true standard deviation of daily sugar intake in Durham county. f. The researcher cannot determine whether a t-distribution or a normal distribution would be more appropriate without looking at the shape of the population distribution.

ansver
Answers: 3

Another question on Mathematics

question
Mathematics, 21.06.2019 14:00
Colin listed his assets and liabilities on a personal balance sheet. colin’s balance sheet (august 2013) assets liabilities cash $1,500 credit card $500 stocks $800 rent $800 car $5,000 car loan $1,200 coin collection $1,200 student loan $5,000 total total which statement is true about the total assets and the total liabilities? the total of the assets and the liabilities are the same. the total of the assets is greater than the total of the liabilities. the total of the assets is less than the total of the liabilities. the total of the assets cannot be compared to the total of the liabilities.
Answers: 2
question
Mathematics, 21.06.2019 15:10
Two lines that do not intersect are skew. always sometimes or never
Answers: 1
question
Mathematics, 21.06.2019 16:30
Scale factor of 2 is used to enlarge a figure as shown below the area of is 18 in.²
Answers: 3
question
Mathematics, 21.06.2019 20:50
Samson is going shopping for sugar and butter to make three different kinds of cookies: lemon bars, peanut butter cookies, and sugar cookies. the recipe for lemon bars calls for 2 cups of flour, 2 cups of sugar, and 1 stick of butter. the peanut butter cookie recipe calls for 2 cups of flour, 4 cup of sugar and 2 stick of butter. the sugar cookie recipe calls for 1 cup of flour, 2 cups of sugar, and 2 sticks of butter. sampson has 13 cups of flour at home, and he buys 12 cups (6 pounds) of sugar and 10 sticks of butter. how many batches of each type of cookie can he make? samson can make batches of lemon bars, batches of peanut butter cookies, and batches of 09 cookies submit reset
Answers: 1
You know the right answer?
A public health researcher wishes to study the dietary behavior of residents in Durham County. The r...
Questions
question
Mathematics, 29.02.2020 00:57
Questions on the website: 13722367