The next thing you are interested in knowing is if the sex ratio of the crab population in the Edisto river is 1:1 (1 male : 1 female), as we would expect it to be based on our knowledge that the probability of a fertilized egg being XX (female) or XY (male) is 50%. To estimate the sex ratio from the data collected we will use the total number of adult male and adult female crabs caught from the Edisto river. 1a. Write a statistical null hypothesis for this problem: 1b. Write a statistical alternate hypothesis for this problem: 1c. Which statistical test should you use to find out if there is a significant difference between what we observed and what we expected? Before answering, consider the following: a. Our dependent variable in this question is the ratio of adult males to adult females caught during the entire study (i.e. counts) b. We are comparing what we observed and actually counted to a model, what we expect to find. c. Which test should you choose?

About 8 % if the U.S. population catches the flu each season. Assuming everyone has equal probably of catching the flu, about what are the odds of catching the flu in a given season?

Please answer these questions  thanks

A reader wrote in to the “Ask Marilyn” column in Parade magazine to say that his grandfather told him that in three-quarters of all baseball games, the winning team scores more runs in one inning than the losing team scores in the entire game. (This phenomenon is known as a “big bang.”) Marilyn responded that this proportion seemed too high to be believable. Let p be the proportion of all major-league baseball games in which a “big bang” occurs. To investigate this claim, we randomly selected one week of the 2006 major-league baseball season, which turned out to be July 31-August 6, 2006. Then we examined the 95games played that week to determine which had a big bang and which did not. Of the95 games in our sample, 47 contained a big bang. Use a two-sided alternative, state the null and alternative hypothesis (in symbols and in words) for testing Marilyn’s claim. 7. Determine the test statistic and p-value. 8. What conclusion would you draw concerning Marilyn’s conjecture using the…

Historically, Olympic officials have reported testosterone levels in general should be u = 538 ng/dL, with o = 189, with x being normally distributed. Summer Olympic sprinters (n = 8) from the U.S. were tested for testosterone levels the morning after the opening ceremonies. Their sample mean was ng/dL. Do these data indicate that the sprinters had an overall average testosterone level greater than 538? Use a = .05. State a, H,, H1, p-value, rejection, or non-rejection, and be certain to interpret your results.

You are analysing a factory. Stage 3 of the manufacturing process has a 45% chance of finishing on time. If it does finish on time, the chance of Stage 4 finishing late is 20%. The overall chance of Stage 4 finishing on time is 71.2%. What is the chance that Stage 4 finishes late if Stage 3 finished late? Round your answer to 2 decimal places.

Please help me with number six on this algebra II review. Thank you

The table lists the smoking habits of a group of college students. Regular Smoker Heavy Smoker Total 173 222 395 Sex Non-smoker Man Woman Total 135 187 322 OA. 0.942 OB. 0.911 OC. 0.945 O D. 0.863 33 21 54 5 14 19 If a student is chosen at random, find the probability of getting someone who is a man or a non-smoker. Round your answer to three decimal places. C