1) An insurance investigator has observed the people with some astrological signs tend to be safer drivers the people with other signs. Using insurance records, the investigator classified 200 people according to their astrological signs and whether or not they were involved in a car accident during the previous 12 months. The data are as follows:   Libra Leo Gemini     Accident 7 4 19     No Accident 73 46 1   Do the data indicate a significant relationship between sign and accidents? Compute a Chi-Square Test at the .05 level of significance.

Dr.Blume has trained observers to use frequency recording to record the behavior of 12 schizophrenic clients. According to the analysis of the data κ = 0 . 47, do you think the observers are sufficiently trained to allow Dr. Blume to proceed with the research?

5. Suppose a marketing research firm would like to examine if the social networking site that a person primarily uses is influenced by his or her age. In a randomly drawn sample, 369 social network users were asked which site they primarily visited. These data are presented in the following table along with each person's age group. Complete parts a. through c. below. 1 Click the icon to view the data table. a. Using a = 0.025, perform a chi-square test to determine if age group and social networking site used are independent of one another. Identify the null and alternative hypotheses for a chi-square test of independence based on the information in the table. Choose the correct answer below. O A. Ho: Age group and social networking site are independent of one another. H: Age group and social networking site are not independent of one another. O B. Ho: Age group and social networking site are independent of one another. H,: The age group affects the social networking site. OC. Ho: Age…

QUESTION 2 An environmentalist wanted to determine if the mean acidity of rain differed among Ipoh, Johor Bahru and Kuantan. He randomly selected six rain dates at each city and obtained the following data: Table 2 Ipoh 5.10 5.00 4.91 5.12 4.78 5.20 Johor Bahru 4.80 4.15 4.42 4.65 4.87 4.10 Kuantan 5.45 6.23 5.55 5.10 5.42 5.25 Answer the following questions without using any output from any software. a) Construct a complete Analysis of Variance table. b) At <= 0.05, test whether the mean acidity of rain is different among the three cities. c) Based on the answer in (a) and (b), write a brief conclusion on the mean acidity of rain among Ipoh, Johor Bahru and Kuantan.

question 26

The table below has a total of 60 values. Find the 4th decile for the following Grouped Frequency Data Table (GFDT). Lower Class Upper Class Frequency Limit Limit 40 44 6. 45 49 6. 50 54 5 55 59 60 64 4 65 69 4 70 74 75 79 80 84 4 The 4th decile = CO CO

2. Is the data in the frequency table below Nominal, Interval, or Ordinal level of measurement? Lunch Choices Mac 'n Cheese Sandwich Chicken Nuggets Answer: Soup Hamburger Answer: Frequency 5 8 6 2 1 3. What is the mode of the frequency table in question 2?

Given the following histogram for a set of data, how many values in the data set are greater than 10.5 but less than 12.5?   A histogram has a horizontal axis labeled Values from 7.5 to 16.5 in increments of 1 and a vertical axis labeled Frequency from 0 to 6 in increments of 1. The histogram has vertical bars of width 1, starting at the horizontal axis value of 7.5. The approximate heights of the bars are as follows, where the horizontal axis label is listed first and the approximate height is listed second: 7.5, 1; 8.5, 2; 9.5, 3; 10.5, 2; 11.5, 3; 12.5, 4; 13.5, 1; 14.5, 5; 15.5, 6.

Use the given information to answer subquestion 1.a, 1.b, and 1.c

pls answer D on paper