Claim: Most adults would erase all of their personal information online if they could. A software firm survey of 558 randomly selected adults showed that 50.5​% of them would erase all of their personal information online if they could. Make a subjective estimate to decide whether the results are significantly low or significantly​ high, then state a conclusion about the original claim.  *The results____▼significantly___▼ so there____▼ sufficient evidence to support the claim that most adults would erase all of their personal information online if they could.

More Information From the Online Dating Survey A survey conducted in July 2015 asked a random sample of American adults whether they had ever used online dating (either an online dating site or a dating app on their cell phone). 18-to 24-year-olds The survey included 194 young adults (ages 18 to 24) and 53 of them said that they had used online dating. If we use this sample to estimate the proportion of all young adults to use online dating, the standard error is 0.032. Find a 90% confidence interval for the proportion of all US adults ages 18 to 24 to use online dating. Round your answers to three decimal places. The 90% confidence interval is i to i

You receive a brochure from a large university. The brochure indicates that the mean class size for full-time faculty is fewer than 31 students. You want to test this claim. You randomly select 18 classes taught by full-time faculty and determine the class size of each. The results are shown in the table below. At a = 0.10, can you support the university's claim? Complete parts (a) through (d) below. Assume the population is normally distributed. 34 26 27 35 33 37 28 23 270 25 31 34 30 32 27 30 28 28 (a) Write the claim mathematically and identify Ho and Ha. Which of the following correctly states Ho and H,? O A. Ho: H= 31 O B. Ho: H= 31 OC. Ho: H>31 Ha:H 31 (b) Use technology to find the P-value, P = (Round to three decimal places as needed.) (c) Decide whether to reject or fail to reject the null hypothesis. Which of the following is correct? O A. Reject Ho because the P-value is greater than the significance level. O B. Fail to reject Ho because the P-value i less than the…

In point estimation, data from the _____. a. sample are used to estimate the sample statistic    b. population are used to estimate the population parameter    c. sample are used to estimate the population parameter    d. None of these answers are correct.

The expected relative frequency of a particular outcome is?

4.. Solve all parts clearly please

About store owner claims that the proportion of people who read books in print is greater than 0.25 Null hypnosis Alternative hypnosis Choose one: left tailed Right tailed 2 tailed

Claim: Most adults would erase all of their personal information online if they could. A software firm survey of 460 randomly selected adults showed that 58% them would erase all of their personal information online if they could. Find the value of the test statistic. The value of the test statistic is. (Round to two decimal places as needed.)

18

You receive a brochure from a large university. The brochure indicates that the mean class size for full-time faculty is fewer than 31 students. You want to test this claim. You randomly select 18 classes taught by full-time faculty and determine the class size of each. The results are shown in the table below. At a = 0.05, can you support the university's claim? Complete parts (a) through (d) below. Assume the population is normally distributed. 32 25 29 30 35 39 28 24 320 28 27 36 35 26 24 28 25 25 (a) Write the claim mathematically and identify Ho and Ha- Which of the following correctly states Ho and Ha? Ο Α. Hρ: μ2 31 О В. Но: и 31 O D. Ho: µ> 31 O E. Ho: H= 31 Hạ: u# 31 OF. Ho: µ= 31 H3: us31 Hại u< 31