Question: As a company manager for Claimstat Corp., there is a .40 probability that you will be promoted this year. There is a 0.72 probability that you will get a promotion, a raise, or both. The probability of getting a promotion and a raise is 0.25. a. If you get a promotion, what is the...
Question: The sales records of a real estate agency show the following sales over the past 200 days: Number of Houses Sold Number of Days 0 60 1 80 2 40 3 16 4 4 a. Assign probabilities to the sample points and show their values. b. What is the probability the agency will sell...
Question: Suppose that 9 female and 7 male applicant have been successfully screened for 5 positions. If the 5 positions are filled at random from the 16 finalists, what is the probability of selecting A. 3 females and 2 males B. 4 females and 1 male C. 5 females D. at least 4 females
Question: In certain community the prevalence of hypertension (HT) among three groups (N-normal, P-prediabetic, D-diabetic) are reported in Table 1, while Table 2 presents cross-tabulation of gender and diabetic status for the same community. a) One person is randomly selected from the community. Find probability that this person is female. b) One person is randomly...
Question: Health status of UNCC students was investigated in the research study. The distribution of fasting glucose (FG) was approximately normally distributed with mean 97 and standard deviation of 10. During 12 days, a sample of fifty students was selected. What is the probability that at least 6 students have FG < 87? Selected values...
Question: During typical 5 years the average number of new cancer cases of certain type in Charlotte was 60. Assume that the number of new cancer cases can be well modeled using Poisson distribution. If conditions for the disease are similar during 2014, how high is the chance that 10 or more cases will be...
Question: Suppose that the rate of type 2 Diabetes Mellitus (DM) among 40-60 years old is 10% among Caucasians, 15% among African-Americans, 20% among Hispanics and 5% among Asian-Americans. Suppose that ethnic distribution in Charlotte, NC among 40-60 years old is 40% Caucasian, 25% African-American, 20% Hispanic and 15% Asian-American. What is the chance that...
Question: Which of the following are binomial distributions? a. Randomly selecting 12 jurors and recording their nationalities b. Surveying 12 jurors and recording whether there is a “no” response when they are asked if they have ever been convicted of a felony c. Recording the gender of 250 newborn babies d. Recording the number of...
Question: A sample of 3 calculators is randomly selected from a group containing 40 defective and 20 non-defective calculators. What is probability that all 3 calculators selected will be defective?
Question: In a study of 1000 two parent families, a researcher found the mean height of the husbands was 68 inches with a standard deviation of 2.7 inches. The mean height of the wives was 63 inches with a standard deviation of 2.5 inches. Assume that the populations of husbands and wives both are normally...
