Twenty years ago, 47% of parents of children in high school felt it was a serious problem that high school students were not being taught enough math and science. A recent survey found that 293 of 900 parents of children in high school felt it was a serious problem that high school students were not being taught enough math and science. Do parents feel differently today than they did twenty years ago? Use the a = 0.01 level of significance. ... Find the test statistic. Zo = (Round to two decimal places as needed.)

Twenty years ago, 52% of parents of children in high school felt it was a serious problem that high school students were not being taught enough math and science. A recent survey found that 281 of 800 parents of children in high school felt it was a serious problem that high school students were not being taught enough math and science. Do parents feel differently today than they did twenty years ago? Use the a= 0.1 level of significance. C... Because npo (1-Po) 4 = 10, the sample size is 5% of the population size, and the sample ▼satisfied. the requirements for testing the hypothesis (Round to one decimal place as needed.). Clear all Help me solve this Get more help . H Type here to search a ? 3 AS E 4 View an example O Bi R V 5 T G 6 B a H N 8 S a hp M 9 O P Check answer 12:55 PM ^ 6/18/2022 94°F Mostly sunny

The College Board provided comparisons of Scholastic Aptitude Test (SAT) scores based on the highest level of education attained by the test taker's parents. A research hypothesis was that students whose parents had attained a higher level of education would on average score higher on the SAT. The overall mean SAT math score was 514. SAT math scores for independent samples of students follow. The first sample shows the SAT math test scores for students whose parents are college graduates with a bachelor's degree. The second sample shows the SAT math test scores for students whose parents are high school graduates but do not have a college degree. College Grads 485 487 518 517 650 542 570 426 566 499 588 562 497 448 592 453   High School Grads 442 492 580 478 479 425 486 485 528 390 524 535 (b) What is the point estimate of the difference between the means for the two populations?   (c) Find the value of the test statistic. (Round your answer…

Twenty years ago, 56% of parents of children in high school felt it was a serious problem that high school students were not being taught enough math and science. A recent survey found that 247 of 700 parents of children in high school felt it was a serious problem that high school students were not being taught enough math and science. Do parents feel differently today than they did twenty years ago? Use the a = 0.01 level of significance. 5% of the population size, and the sample can be reasonably assumed to be random, the requirements for testing the hypothesis Because npo (1-Po) = 172.5 > 10, the sample size is less than are satisfied. (Round to one decimal place as needed.) What are the null and alternative hypotheses? 0.56 versus H,: p # 0.56 Ho: (Type integers or decimals. Do not round.) %D Find the test statistic. Zo = (Round to two decimal places as needed.) %D

The U.S. Department of Transportation, National Highway Traffic Safety Administration, reported that 77% of all fatally injured automobile drivers were intoxicated. A random sample of 52 records of automobile driver fatalities in a certain county showed that 35 involved an intoxicated driver. Do these data indicate that the population proportion of driver fatalities related to alcohol is less than 77% in Kit Carson County? Use ? = 0.10. What is the value of the sample test statistic? (Round your answer to two decimal places.)=__   (c)Find the P-value of the test statistic. (Round your answer to four decimal places.)=__

A news article that you read stated that 50% of voters prefer the Democratic candidate. You think that the actual percent is smaller. 128 of the 284 voters that you surveyed said that they prefer the Democratic candidate. What can be concluded at the 0.01 level of significance?

A study compared the felt intensity of unrequited love among three groups​ - individuals who were currently experiencing unrequited​ love, those who had previously experienced unrequited love and described their experiences​ retrospectively, and those who had never experienced unrequited love but described how they thought they would feel if they were to experience it. The results of the study are summarized in the accompanying table. Determine the significance of the difference among​ groups, using the​ 5% level.    N 40 40 40 M 3.5 3.3 3.7 S2 5.3 5.8 4.8   1. What is th null hyp?  2.The comparison distribution will be an F distribution with df= ? and df=?  3.Determine the cutoff sample score on the comparison distribution at which the null hypothesis should be rejected for the data. At 0.05  the cutoff for F=? 4. Determine the​ sample's score on the comparison distribution for the data. F=?

A software company is interested in improving customer satisfaction rate from the 53% currently claimed. The company sponsored a survey of 223 customers and found that 128 customers were satisfied. What is the test statistic 2? Ex: 2.22 Check Next Feedback?

In a survey that asked individuals about their favorite styles of music, 37 replied rock, 27 said they preferred pop music, 14 stated they like classical music the most, and 3 individuals stated they preferred opera. Based on this data, what would be the mode? Why couldn’t the mean or median be used to describe this set of values?

In a city with three high schools, all the ninth graders took a Standardized Test, with these results: High School Mean score on test Number of ninth graders Glenwood 76 272 Central City 93 325 Lincoln High 73 180 The city's PR manager, who never took statistics, claimed the mean score of all ninth graders in the city was 80.7 . Of course, that is incorrect. What is the mean score for all ninth graders in the city? Round to one decimal place.mean of all ninth grader's scores =