A Pearson correlation of r = –0.85 indicates that a graph of the data would show __________.A) points clustered close to a line that slopes up to the rightB) points clustered close to a line that slopes down to the rightC) points widely scattered around a line that slopes up to the rightD) points widely […]
calculate the mean, median and mode of each of the following populations of numbers 9,8,10,102,6,11,10,12,8,110,120,70,90,90,100,80,130,140
In a survey of 3219adults, 1416 say they have started paying bills online in the last year. Construct a 99% confidence interval for the population proportion. Interpret the results. A 99% confidence interval for the population proportion is left parenthesis nothing comma nothing right parenthesis
Suppose a candidate running for sheriff claims that she will reduce the average speedof emergency response to less than 30 minutes. (30 minutes is thought to be the averageresponse time with the current sheriff.) There are no past records, so the actualstandard deviation of such response times cannot be determined. Thanks to this campaign,she is […]
Normal Probability distributions: The reported scores on a nationally standardized achievement test for high school graduates have a mean of 500 with the standard deviation of 100. The scores of are approximately normally distributed, what is the probability that the score of a randomly chosen individual will be (a) between 500 and 650? And (b) between 450 […]
all three treatments have the same mean, M1 = M2 = M3. For these data SSbetween equals?
Write at least six-hundred words in a Health and Wellness Summary for this individual (details below). In your summary, include the following topics: An initial assessment of the person’s health based on the profile characteristics. Risk factors that this person may face. At least 2 suggestions to improve their specific health and wellness. PLEASE DON’T COPY & […]
A study was conducted to determine the proportion of American teenagers between 13 and 17 who smoke. Previous surveys showed that 15% percent of all teenagers smoke. A Gallup survey interviewed a nationally representative sample of 785 teenagers aged 13 to 17. Seventy-one teenagers in the survey acknowledged having smoked at least once in the […]
A financial advisor has recommended two possible mutual funds for investment: Fund A and Fund B. The return that will be achieved by each of these depends on whether the economy is good, fair, or poor. A payoff table has been constructed to illustrate this situation: Investment Good Economy Fair economy Poor Economy -$5,000 0 […]
Assuming a normal distribution, families spend an average of $500 on their monthly cell phone bills with a standard deviation of $75. What is the probability a random families bill is more than $550 25.12% 74.86% 15.26% 24.86 % ?
