-A Department of Mathematics at a University claims in an advertisement that the mean math SAT scores of its majors is at least 600. Admissions at the University wants to make sure that the statement of the Department of Mathematics is a reasonable one and decides to test the claim using a significance level of 0.10 with a random sample of 16 math majors. The results are below. SAT scores are normally distributed with a population standard deviation of 15. 570 610 620 560 630 610 570 610 550 560 580 620 600 600 580 650

A study was conducted to determine the proportion of people who dream in black and white instead of color. Among 309 people over the age of 55, 77 dream in black and white, and among 309 people under the age of 25, 18 dream in black and white. Use a U.U5 signiticance level to test the claim that the proportion of people over 55 who dream in black and white is greater than the proportion for those under 25 Complete parts (a) through (c) below. Consider the first sample to be the sample of people over the age of 55 and the second sample to be the sample of people under the age of 25. What are the null and alternative hypotheses for the hypothesis test? Identify the test statistic. z= (Round to two decimal places as needed.) Identify the P-value. P-value= (Round to three decimal places as needed.) What is the conclusion based on the hypothesis test? The P-value is ______ the significance level of a = 0.05, so ______ black and white is ____ the proportion for those under 25. There is…

Suppose we want to choose 2 letters, without replacement, from the 5 letters A, B, C, D, and E. a) How many ways can this be done, if the order of the choices is relevant? b) How many ways can this be done, if the order of the choices is not relevant?

Select the correct choices that complete the sentences below. a) The negation is symbolized by and is read" b) The conjunction is symbolized by ^ and is read ". c) The disjunction is symbolized by v and is read ". 11 11 a) The negation is symbolized by and is read "or." %3D "but." "if and only if." "if-then." "and." "not."

1. Given the symbols: p, q, and r, draw the truth table for the following expressions: а. (рла) b. -(p a q) v (p v q) c. (q→p) v- (q→ (pvr))