An SMC student wants to determine the mean amount of financial aid received by students at the college.  How many students should be polled to determine the mean to within $85 at 95% confidence.  Assume that the standard deviation in financial aid is known to be $1400.  

It is claimed that 64.2% of all community college students plan to transfer.  You decide to test this claim.  What is the minimum sample size required to be sure the Central Limit Theorem applies in your work.  Enter the number in the space provided below. 

Classify each of the following quantitative variables as either continuous or discrete.  a. Number of letters in a word  [a] b. Length of a piece of rope [b]

Find the area under the standard normal curve to the right of z = 1.25.

A random sample of 400 SMC students indicated that 271 of them said they drink coffee daily  Find the 95% confidence interval for the true proportion of SMC students that drink coffee daily.  Round the endpoints of the interval to three decimal places.  Assume that the conditions to find the confidence interval are met. 

Identify the level of measurement (nominal, ordinal, interval, ratio) for each of the following variables.  a. meal being eaten: breakfast, lunch, dinner [a] b. number of pets in a household [b] c. temperature of a lake [c] d. type of bread used in a sandwich [d]

Suppose you want to find the confidence interval at a confidence level of 93%.  What is the corresponding critical value, 

A poll of 2084 Santa Monica residents asked their age, how long they had lived in Santa Monica and whether they supported raising the minimum wage in the city.   Answer each of the following. a) What is the population in this study?  [pop] b) What is the sample in this study? [sam] c) List the variable(s) of interest in this study.  [var]

The probability that an airline flight is delayed is [x].  What is the probability that an airline flight is not delayed? Enter your response rounded to three decimal places in the format 0.XXX.  If you do not use the correct format your response will be considered incorrect. 

Suppose you want to test the claim that μ < 35.7. Given a sample size of n = 31 and a level of significance ofα = 0.10, when should you reject the null hypothesis ?