Sydney house prices are rising rapidly and many believe that the average house price in Sydney is above$1,000,000. Phuc used a sample of 1000 recent property sales in Sydney to test the claim. He found thatthe sample mean price was $1,060,000 and the t-statistic was 1.05.a)(round your answer to 2 decimal places)b)isThe standard error of the sample mean house price must bed)distributed.The null hypothesis Ho is:Using 5% significance level, you can conclude thatc)The p-value associated with the test is(leave your answer in decimals, rounded to 4 decimal places)+ 1,000,000For the test result to be valid, Phuc needs to assume that Sydney house prices are normally

The given sample mean price is $1,060,000 and the t-statistic was 1.05.

Answered: Sydney house prices are rising rapidly…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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a) Studies have shown that a positive association exists between educational level and annual salary; in other words, people with more education tend to make more money. i. Does this finding mean that more education causes a person to make more money? Explain your answer. ii. Do you think there is a causal relationship between educational level and annual salary? Explain your answer.
The mean and S.D. of 20 items were found to be 12 and 6 respectively. On checking it was discovered that items which should correctly read as 11 and 21 had been wrongly taken as 15 and 27 respectively. Find the correct values of mean and S.D.
These next questions come after part B. Which of the statements correctly describes the relationship between the mean and median in the histogram of the number of servings of fruit per day claimed by the 7474 seventeen‑year‑old girls? A) The mean and median are about equal because the distribution is right‑skewed. B) The mean is larger than the median because the distribution is right‑skewed. C) The median is larger than the mean because the distribution is right‑skewed. D) There is not enough information to tell us about the relationship between the mean and median in the histogram. (c) In general, you cannot find the exact values of median, quartiles, or mean from the histogram. What is special about the histogram of the number of servings of fruit that allows you to do this? Select an answer choice. A) We know exactly how many observations fall in each bin because of the way the bins are constructed. B) The sample size only consists of only 74…
The planning director of Wellington, NZ, wants to determine whether the mean age of residents in his city is similar to 29.6 years (the national average age). A random sample of 80 residents is surveyed, with a desired confidence level of 99%. The Research Hypothess is: Mean Age (Wellington) Mean Age (National) Mean Age (Wellington)# Mean Age (National) Mean Age (Wellington)2 Mean Age (National)
The sample mean is the point estimator of а. O b. o О с. р С. O d. H
The U.S. National Center for Health Statistics complies birth statistics and publishes the results in vital statistics of the United States. The Center has historically believed that the mean of all newborns in the U.S. has been no less than 6.95 pounds. A sample of babies is selected so that the center can revise its belief. The following birth weights, in pounds are recorded: 7.4, 6.0, 8.6, 4.5, 2.0, 7.9, 4.0, 2.6, 5.9, 7.3, 7.3, 7.0, 6.3, 8.1, 7.1, 7.3, 6.6, 5.2, 9.8, 8.0, 10.9, 6.5, 3.8, 5.0, 8.0 a). At 5% level of significance, do these data provide sufficient evidence to refute the Center’s belief? Your conclusion must be in terms of the P-Value as well as setting up a Rejection Region. You must show all necessary work. b). Which statistical distribution should be applied in this situation and why? Explain carefully.
A. There is sufficient evidence to support the claim that the mean is less than 32 miles per gallon. O B. There is not sufficient evidence to support the claim that the mean is less than 32 miles per gallon. O C. There is not sufficient evidence to support the claim that the mean is greater than 32 miles per gallon. O D. There is sufficient evidence to support the claim that the mean is greater than 32 miles per gallon.
Your medical research team is investigating the mean cost of a 30-day supply of a certain heart medication. A pharmaceutical company thinks that the mean cost is more than $95. You want to support this claim. How would you write the null and alternative hypotheses?
What is a Type I error in this problem? A. A Type I error would be to conclude that the true mean level of support for sustainability is not 66 when, in fact, the mean is equal to 66. B. A Type I error would be to conclude that the sample mean level of support for sustainability is greater than 66 when, in fact, the sample mean is less than 66. C. A Type I error would be to conclude that the true mean level of support for sustainability is 66 when, in fact, the mean is not equal to 66. D. A Type I error would be to conclude that the sample mean level of support for sustainability is less than 66 when, in fact, the sample mean is greater than 66.
O A. There is sufficient evidence to support the claim that the mean attendance is greater than 523. O B. There is not sufficient evidence to support the claim that the mean attendance is less than 523. O C. There is sufficient evidence to support the claim that the mean attendance is less than 523. O D. There is not sufficient evidence to support the claim that the mean attendance is greater than 523
please answer the first 3 and explain the reason for the answer.

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