The mean sat score in mathematics, μ , is 534 . the standard deviation of these scores is 25 . a special preparation course claims that its graduates will score higher, on average, than the mean score 534 . a random sample of 37 students completed the course, and their mean sat score in mathematics was 535 . assume that the population is normally distributed. at the 0.05 level of significance, can we conclude that the preparation course does what it claims? assume that the standard deviation of the scores of course graduates is also 25 . perform a one-tailed test. then fill in the table below. carry your intermediate computations to at least three decimal places, and round your responses as specified in the table. (if necessary, consult a list of formulas.) the null hypothesis: h0: the alternative hypothesis: h1: the type of test statistic: the value of the test statistic: (round to at least three decimal places.) the critical value at the 0.05 level of significance: (round to at least three decimal places.) can we support the preparation course's claim that its graduates score higher in sat? yesno μσpxsp

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a, b and c integers and a> 1

1.3.25 question suppose 40​% of all voters voted for a particular candidate. to simulate exit polls regarding whether or not voters voted for this​ candidate, five random samples of size 1010 and five random samples of size 10001000 have been generated using technology using a population proportion of 0.400.40​, with the accompanying results. complete parts a through c below. click the icon to view the simulation results. a. observe how the sample proportions of successes vary around 0.400.40. simulation compared to sample prop simulation compared to sample prop 1 ▾ 6 ▾ greater than 0.40 less than 0.40 equal to 0.40 2 ▾ less than 0.40 greater than 0.40 equal to 0.40 7 ▾ greater than 0.40 less than 0.40 equal to 0.40 3 ▾ greater than 0.40 less than 0.40 equal to 0.40 8 ▾ equal to 0.40 greater than 0.40 less than 0.40 4 ▾ greater than 0.40 equal to 0.40 less than 0.40 9 ▾ less than 0.40 greater than 0.40 equal to 0.40 5 ▾ equal to 0.40 less than 0.40 greater than 0.40 10 ▾ equal to 0.40 greater than 0.40 less than 0.40 click to select your answer(s) and then click check answer. 2 parts remaining clear all check answer

Akayaker travels 3 miles upstream and 3 miles downstream in a total of 4 hours. in still water, the kayaker travels at a speed of 2 mph. what is the average speed of the river's current?