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.
Answers: 3
Mathematics, 21.06.2019 14:00
Chanelle deposits $7,500 into the bank. she does not withdraw or deposit money for 6 years. she earns 6% interest during that time. what will the balance be when she is finally able to withdraw her money?
Answers: 1
Mathematics, 21.06.2019 19:00
Kayla and alberto are selling fruit for a school fundraiser. customers can buy small boxes of grapefruit and large boxes of grapefruit. kayla sold 3 small boxes of grapefruit and 1 large box of grapefruit for a total of $65. alberto sold 1 small box of grapefruit and 1 large box of grapefruit for a total of $55. what is the cost each of one small box of grapefruit and one large box of grapefruit?
Answers: 1
Mathematics, 21.06.2019 23:00
If 3 3/4 lb. of candy costs 20.25 how much would 1lb. of candy cost
Answers: 1
A public health researcher wishes to study the dietary behavior of residents in Durham County. The r...
Mathematics, 10.07.2019 18:10
Mathematics, 10.07.2019 18:10
History, 10.07.2019 18:10
Mathematics, 10.07.2019 18:10
Physics, 10.07.2019 18:10
Business, 10.07.2019 18:10
English, 10.07.2019 18:10
Mathematics, 10.07.2019 18:10