An iq test is designed so that the mean is 100 and the standard deviation is 1818 for the population of normal adults. find the sample size necessary to estimate the mean iq score of statistics students such that it can be said with 9595% confidence that the sample mean is within 88 iq points of the true mean. assume that sigmaσequals=1818 and determine the required sample size using technology. then determine if this is a reasonable sample size for a real world calculation.

Does the problem involve permutations or? combinations? do not solve. the matching section of an exam has 4 questions and 7 possible answers. in how many different ways can a student answer the 4 ? questions, if none of the answer choices can be? repeated?

Kevin has a spinner that has 10 equal sections and 2 sections of each color—red, blue, green, yellow, and purple. kevin spins the spinner 180 times. kevin determines about how many times the spinner will land on red or green, and his work is shown below. -kevin has the formula reversed; it should be the total number of sections over the number of red or green sections. -kevin should have used a 4 in the numerator because there are 2 red sections and 2 green sections. -kevin should multiply by the number of sections in the spinner rather than the total number of spins. -kevin calculated the prediction correctly and did not make any mistakes.

The actual length of side t is 0.045cm. use the scale drawing to find the actual side length of w