The average prices and quantities of six items grown in Nakuru County are shown  in the following table:   2018 2020 Items Price  (Kshs/Kg) Quantity  (Kg,000) Price  (Kshs/Kg) Quantity  (Kg,000) Pineapples( A) 10 4 12 5 Oranges(B) 15 6 18 10 Bananas(C) 10 6 10 10 Beans(D) 20 10 22 20 Wheat(E) 30 12 40 18 Millet(F) 40 10 50 12

2.2 Multiple Choice Questions 41. The process of using data collected from a small group to reach conclusions about a large group is called (a) statistical inference. (b) descriptive statistics. (c) sampling. (d) the scientific method 42. Those methods involving the collection, presentation, and characterization of a set of data in order to properly describe the various features of that set of data are called (a) the scientific method Page 7 2 REVISION 2.2 Multiple Choice Questions (b) statistical inference. (c) descriptive statistics. (d) sampling. 43. The collection and summarization of the socioeconomic and physical characteristics of the employees of a particular firm is an example of (a) inferential statistics. (b) descriptive statistics. (c) a parameter. (d) a statistic.

Choose the correct answer. On Day 1 of a technology conference in San Diego, 15 presenters who were setting up for their sessions in Annex C became ill with flu-like symptoms. During the course of the conference, 20 participants who attended sessions in Annex C also became ill with the same symptoms. To begin calculating the rate of this outbreak, investigators should first determine A) the size of the conference population, B) the number of cases of illness, C) the number of days the conference was held, D) the location of the conference?

6. Setup: JP was curious about the sodium content of organic cornflakes. To investigate this, twenty 300-gram boxes of organic cornflakes were obtained and the sodium content was measured. The data (in milligrams) are as follows: 131.1, 130.7, 130.9, 129.5, 129.6, 128.8, 130.7, 128.3, 128.2, 129.7, 130.1, 129.3, 128.7, 129.0, 129.4, 130.4, 129.5, 130.1, 129.8, 130.0 Task: Perform a hypothesis test using R to determine if you can support a claim that the mean sodium content of this brand of cornflakes differs from 130 milligrams? Use a = 0.08 to make your decision. R Output: Upon running your analysis in R, you obtain the following results: One Sample t-test data: corn = 0.1121 t = -1.6659, df = alternative hypothesis: true mean is not equal to 130 19, р-value 92 percent confidence interval: 129.3458 130.0342 sample estimates: mean of x 129.69 Questions: (a) State the hypotheses used in performing this test. (b) Using the output above, state the decision (Reject or Not Reject Ho) of the…