The average 1-year-old is 29 inches tall. A random sample of 30 one-year-olds in a large day care franchise resulted in the following heights. At a = 0.05, can it be concluded that the average height differs from 29 inches? Assume o = 2.61

The average 1-year-old is 29 inches tall. A random sample of 30 one-year-olds in a large day care franchise resulted in the following heights. At a = 0.05, can it be concluded that the average height differs from 29 inches? Assume o = 2.61

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

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
You receive a brochure from a large university. The brochure indicates that the mean class size for full-time faculty is fewer than 32 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. 32 31 26 31 34 41 25 24 290 27 30 33 30 29 28 30 25 23 OD. Ho p 32 Ha p2 32 Ha p< 32 Ha us 32 (b) Use technology to find the P-value. P = (Round to three decimal places as needed.) Enter your answer in the answer box and then click Check Answer.
Please answer 4.6
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 27 26 35 29 39 25 26 290 28 28 34 30 32 28 29 26 24 (a) Write the claim mathematically and identify Ho and Ha. Which of the following correctly states Ho and H3? O A. Ho: H= 31 B. Ho, μs 31 O c. Ho : μ= 3 Ha: H#31 Ha: u> 31 Ha: H31 OF. Ho: H231 Ha: u231 Ha: us 31 Ha: µ<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 less than the significance level. O B. Fail…
It has been reported that on average, college students spent 3 hours per day watching YouTube. A sample of 12 college students have been taken and time in hour (x) they spent watching YouTube have been recorded as follow: 4.2 a 1.8 3.1 4.4 1.3 2.7 3.9 4.3 0.8 3.4 6.1 a) Given that that use the formula to determine the point estimators of population mean and standard deviation. b) Find a 90% and 95% confidence interval for population mean. What can you summarize from the findings when we increase the confidence level from 90% to 95%?
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 Ha μ#31 33 26 (b) Use technology to find the P-value. 25 30 28 38 33 36 H₂ μ31 EN 25 28 310 24
The average amount of time it takes for couples to further communicate with each other after their first date has ended is 2.35 days. Is this average different for blind dates? A researcher interviewed 70 couples who had recently been on blind dates and found that they averaged 2.5 days to communicate with each other after the date was over. Their standard devlation was 0.655 days. What can be concluded at the the a = 0.10 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ?v Select an answerv H: ?vSelect an answerv c. The test statistic ?v (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is ?v a f. Based on this, we should Select an answerv the null hypothesis. g. Thus, the final conclusion is that ... O The data suggest that the population mean is not significantly different from 2.35 at a = 0.10, so there is statistically…
Each observation in a random sample of 98 bicycle accidents resulting in death was classified according to the day of the week on which the accident occurred. Data consistent with information are given in the following table. x² Day of Week Frequency = Sunday Monday Tuesday Wednesday Thursday Friday Saturday 13 12 12 14 13 18 Based on these data, is it reasonable to conclude that the proportion of accidents is not the same for all days of the week? Use a = 0.05. Calculate the test statistic. (Round your answer to two decimal places.) 16 Use technology to calculate the P-value. (Round your answer to four decimal places.) P-value = State the conclusion in the problem context. O Reject Ho. We have convincing evidence that the proportion of accidents is not the same for all days of the week. O Fail to reject Ho. We have convincing evidence that the proportion of accidents is not the same for all days of the week. ● Fail to reject Ho. We do not have convincing evidence that the proportion…
The following data represent the length of life in minutes, measured to the nearest tenth, of a random sample of fifty black mosquitoes subjected to a new spray in a controlled laboratory experiment. 3.9 2.6 3.5 0.4 .5.3 3.5 2.8 2.8 2.1 2.0 2.6 0.4 2.4 5.9 1.2 0.9 1.1 3.7 2.5 0.3 1.8 3.9 1.6 1.8 2.0 2.1 0.2 3.1 4.3 1.9 3.4 6.3 3.2 2.7 0.7 1.2 2.1 2.3 1.8 1.7 2.3 2.5 4.6 1.7 2.9 1.3 1.3 1.5 1.4 0.8 a) Set up a frequency distribution b) Construct a frequency histogram and a frequency polygon c) Solve the Me, Md, SD, 89th percentile, 3rd quartile and 4th decile
Referring to Table 2, the mean square for the factor filling time is____ 1). 0.9030 2). 0.4234 3). 0.4515 4). 0.2117
The following data shows the measured distance between A and B. Determine the Most probable distance between A and B.
The average jump height of a normal man is said to be 18 inches. 15 normal males are selected and their jump height is measured.15.8 16.7 18.8 19.1 17.718.8 18.9 17.6 16.9 15.518.6 19.3 20.5 18.6 18.4In inches.With a 0.05 level of significance, what conclusion can you derive?