their "Go Business" project are normally distributed with a mean of P4,250 and a standard deviation of P300. How many percent of their weekly sales are over P4,700? A. 6.68% B. 13.36% C. 86.63% D. 93.32% 15. In problem number 14, how many percent of the ABM students weekly sales are less than P4,700? A. 6.68% B. 13.36% C. 86.63% D. 93.32%

their "Go Business" project are normally distributed with a mean of P4,250 and a standard deviation of P300. How many percent of their weekly sales are over P4,700? A. 6.68% B. 13.36% C. 86.63% D. 93.32% 15. In problem number 14, how many percent of the ABM students weekly sales are less than P4,700? A. 6.68% B. 13.36% C. 86.63% D. 93.32%

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

1. Draw by hand or in Excel fully labelled curves on a common scale to represent two sets of scores where:a.Mean = 25, Standard Deviation = 4,Mean = 50, Standard Deviation = 4.b.Mean = 50, Standard Deviation = 2,Mean = 50, Standard Deviation = 5.
2. The mean of a statistics examination is 77.0. a. If your score is 85, would you prefer the standard deviation to be large or small for purposes of getting a better grade? Why? b. If your score is 69, would you prefer the standard deviation to be large or small? Why?
1. Suppose that two graduating seniors, one a marketing major and one an accounting major, are comparing job offers. The accounting major has an offer for $55,000 per year, and the marketing student has an offer for $53,000 per year. Summary information about the distribution of offers is given below. Accounting: mean = 56,000 standard deviation = 1,200 Marketing: mean = 52,500 standard deviation = 800 Then calculate the appropriate z scores. (Round your answers to two decimal places.) accounting z score = 55,000 − 56,000 1,200 = (so $55,000 is standard deviations below the mean) marketing z score = 53,000 − 52,500 800 = Relative to the appropriate data sets, the marketing offer is actually more attractive than the accounting offer (although this may not offer much solace to the marketing major). Why is one of the z scores positive and the other one negative? Because the means are different. Because the standard deviations are…
C.28. A car dealership records the number of cars sold each month and finds the mean =56 and the standard deviation =8.2. What does a standard deviation of 8.2 mean?
10. On a history exam, Roberto had a score of 72, which was exactly 3 standard deviations below the mean. The standard deviation for the exam is 4. a. What score was 2 standard deviations above the mean? b. What percent of the scores were at least 88? 72 c. What score represents the mean? d. What percent of the scores were between 80 and 88?
3. ACT scores are roughly Normal with mean 20.8 and standard deviation 4.8, and SAT scores are roughly Normal with mean 1026 and standard deviation 209. Some students take both. For those students, the correlation between the two scores is 0.72. a. What's the equation of the straight line that you'd use to predict ACT scores based on SAT scores? b. I got a 1300 on the SAT, and I'm planning to take the ACT. Predict what I might get, c. What's the equation of the straight line that you'd use to predict SAT scores based on ACT scores? d. My friend got a 27 on the ACT, and she's planning to take the SAT. Predict what she might get. e. How come you're predicting both that I'll do worse than her on the ACT and that she will do worse than me on the SAT? 4. Draw a simple random nlc of size 15 from the labels 40os01, 402.
2. Which measures of central tendency can be used for the variable below? Explain why each of the three measures of central tendency is or is not applicable. Answer Here: How closely do you follow the news about current events? Would you say... Cumulative Frequency Percent Valid Percent Percent Valid Most of the time 1128 41.9 41.9 41.9 some of the time 1304 48.4 48.5 90.4 rarely 239 8.9 8.9 99.3 never 19 .7 .7 100.0 Total 2690 99.9 100.0 Missing Don't Know/Refused (DON'T READ) 2 .1
3. Class problems for Chapter 2: 1) Suppose students' grades in statistics class have a symmetrical and bell-shaped distribution with a mean equal to 77 and a standard deviation of 6. Answer the following questions: a. What is the percentage of grades that are less than 83? b. What is the percentage of grades that are greater than 65 and 89? c. What is the z-score for grade = 70? d. What percentage of grades have a z-score of greater than 1?
Q. 2. Suppose Country B's government now reports that its population mean disposable household income is $1,000 per month, with a standard deviation of $150. Country A's population mean is $1,100, with a standard deviation of $310. a. b. Which country has more variation in income? Explain using popular phrases, such as "gap between rich and poor." Each country defines the poverty level to be $755. If you assume that income has a normal distribution, find the probability that a household's income is below the poverty level in i. Country A ii. Country B Does it seem reasonable to assume a normal distribution? In general, is income symmetric or skewed?
2. The population standard deviation for the age of Fictional College students is 8.4 years. If we want to be 95% confident that the sample mean age is within one year of the true population mean age of Fictional College students, how many randomly selected Fictional College students must be surveyed?
2. At the general hospital, the waiting times (in minutes) before seeing the doctor were recorded. A sample of 10 patients was surveyed recently and their waiting times are shown below: 13 15 23 22 19 16 23 17 18 25 Calculate the mean, standard deviation and coefficient of variation.
5. A. Draw a bell-shaped curve and label the axis with the 7 values including the mean of 500 in the center and the other 6 values of 1. 2, and 3 standard deviations away from the mean B. Approximately what percentage of data values fall below 500? C. Approximately what percentage of data values fall between 400 and 600 ? D. Approximately what percentage of data values fall between 300 and 700? E. Approximately what percentage of data values fall between 200 and 800? F. Approximately what percentage of data values fall above 600? G. Approximately what percentage of data values fall below 200? H. Approximately what percentage of data values fall between 400 and 700 ?