Question A farmer claims that the average mass of an apple grown in his orchard is 100g. To test this claim, he measures the mass of 150 apples that are grown in his orchard and determines the average mass per apple to be 98g. The results are calculated to be statistically significant at the 0.01 level.
What is the correct interpretation of this calculation? Select the correct answer below:
The data are not statistically significant at the 0.05 level.
The mean mass of any 150 apples grown in the farmer's orchard is 98g.
At the 0.01 level of significance, the mean mass of the apples grown in the farmer's orchard is different from 100g.
At the 0.01 level of significance, the mean mass of the apples grown in the farmer's orchard is 98g.
The data is significant at 0.01 significance level which indicates that the mean mass of apples grown in farmer's orchard is different from 100g at 0.01 level.
Option C is correct.
Question A farmer claims that the average mass of an apple grown in his orchard is...
A genetic engineering average more tomatoes than other varieties. A farmer wants to test the claim on a small sca company claims that it has developed modified tomato plant that full-scale planting. Ten genetically modified tomato plants are grown from seeds along At the season's end, the resulting yields in pound are recorded as below Sample 1 Sample 2 Modified Regular o test the claim on a small scale before committing to a own from seeds along with ten other...
The Toylot company makes an electric train with a motor that it claims will draw an average of only 0.8 ampere (A) under a normal load. A sample of nine motors was tested, and it was found that the mean current was x = 1.38 A, with a sample standard deviation of s = 0.41 A. Do the data indicate that the Toylot claim of 0.8 A is too low? (Use a 1% level of significance.) What are we testing...
A manufacturer claims his light bulbs have a mean life of 1500 hours. A consumer group wants to test if their light bulbs do not last as long as the manufacturer claims. They tested a random sample of 220 bulbs and found them to have a sample mean life of 1490 hours and a sample standard deviation of 40 hours. Assess the manufacturer's claim. a) What is the null hypothesis? μ = 1500 x̄ = 1500 x̄ < 1500 μ...
A certain railway company claims that its trains run late 5 minutes on the average. The actual times (minutes) that 10 randomly selected trains ran late were provided giving a sample mean = 9.130 and sample standard deviation s = 1.4 . In testing the company’s claim, (2-sided test) at the significance level of 0.01 and assuming normality Estimate the p-value for this test using the t table A. The correct answer is not among the choices. B. .05<P<.10 C....
A manufacturer claims his light bulbs have a mean life of 2000 hours. A consumer group wants to test if their light bulbs do not last as long as the manufacturer claims. They tested a random sample of 210 bulbs and found them to have a sample mean life of 1980 hours and a sample standard deviation of 50 hours. Assess the manufacturer's claim. a) What is the null hypothesis? Ou = 2000 O x = 2000 Ox< 2000 Ou...
Continue the example in which the farmer claims that organic tomatoes are higher in vitamin A than conventional tomatoes, and the hypotheses to be tested are Ho : y = 1500 versus HQ:p > 1500, where u is the average amount of viiamin A (in IU) in organically grown tomatoes. Let's assume that the distribution of vitamin A is symmetric, so that the median amount of vitamin A in conventional tomatoes is also 1500 IU. In other words, half of...
Problem 5 Part 1: A contractor claims the mean value of his compression test is 6500 psi and has a standard deviation of 500 psi. You attempt to check this by taking 8 sample measurements and find your average is 5900 psi. If your level of significance is 0.01, would you believe the means are the same? If using EXCEL or a t-test website, make sure to copy and paste the screenshot. You will need to EXPLAIN the computer results...
1) The state of CT claims that the average time in prison is 15 years. A random survey of 75 inmates revealed that the average length of time in prison is 16.4 years with a standard deviation of 6.7 years. Conduct a hypothesis to test the state of CT's claim. What type of test should be run? t-test of a mean z-test of a proportion The alternative hypothesis indicates a right-tailed test left-tailed test two-tailed test Calculate the p-value. Keep...
13. (11pt) Automobile manufacturers are very interested in improving the average gas mileage of their newer vehicles. One manufacturer knows that for their hybrid model car, the gas mileages are normally distributed with a mean of 32 mpg. The new model of this car is about to ship out, so the manufacturer randomly selects a sample of 7 new hybrid cars and determines that the mean gas mileage is 29.5 mpg with a standard deviation of 1.32 mpg. Is there...
A manufacturer claims his light bulbs have a mean life of 1800 hours. A consumer group wants to test if their light bulbs do not last as long as the manufacturer claims. They tested a random sample of 230 bulbs and found them to have a sample mean life of 1790 hours and a sample standard deviation of 50 hours. Assess the manufacturer's claim. a) What is the null hypothesis? 正确:D=1800 错误x = 1800 错误x<1800 错误p> 1800 正确答案! 以前的尝试 您的证明编号是153-43332...