Mathematics, 06.05.2020 03:44, krlx

1 point) (Hypothetical.) A random sample of 100 people from City A has an average IQ of 120 with a SD of 18. Independently of this, a random sample of 150 people from City B has an average IQ of 116 with a SD of 15. Are residents of City A smarter on average? Make a z-test of the difference in average IQs; the null hypothesis is that there is no difference. Round your values to three decimal places. If the null is right, the expected value of the difference between average IQs in each sample is , and the standard error of this difference is estimated to be . The observed difference is . The test statistic is . The P-value is approximately

Answers: 2

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 18:30, issagirl05

Find the exact value of each of the following. in each case, show your work and explain the steps you take to find the value. (a) sin 17π/6 (b) tan 13π/4 (c) sec 11π/3

Answers: 2

continue

Mathematics, 21.06.2019 19:30, indiaseel2744

Suppose i pick a jelly bean at random from a box containing one red and eleven blue ones. i record the color and put the jelly bean back in the box. if i do this three times, what is the probability of getting a blue jelly bean each time? (round your answer to three decimal places.)

Answers: 1

continue

Mathematics, 21.06.2019 22:00, wEKLJHFKLJEBFR2460

Luke started a weight-loss program. the first week, he lost x pounds. the second week, he lost pounds less than times the pounds he lost the first week. the third week, he lost 1 pound more than of the pounds he lost the first week. liam started a weight-loss program when luke did. the first week, he lost 1 pound less than times the pounds luke lost the first week. the second week, he lost 4 pounds less than times the pounds luke lost the first week. the third week, he lost pound more than times the pounds luke lost the first week.

Answers: 2

continue

Mathematics, 21.06.2019 22:50, sarbjit879

Which linear inequality is represented by the graph?

Answers: 1

continue

Do you know the correct answer?

1 point) (Hypothetical.) A random sample of 100 people from City A has an average IQ of 120 with a S...