Jump to level 1The additional growth of plants in one week are recorded for 6 plants with asample standard deviation of 2 inches and sample mean of 12 inches.t* at the 0.10 significance level = Ex: 1.234Margin of error = Ex: 1.234Confidence interval = [Ex: 12.345 Ex: 12.345][smaller value, larger value]CheckNext2

Answered: Jump to level 1 The additional growth…

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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Currently patrons at the library speak at an average of 66 decibels. Will this average increase after the installation of a new computer plug in station? After the plug in station was built, the librarian randomly recorded 69 people speaking at the library. Their average decibel level was 67.7 and their standard deviation was 13. What can be concluded at the the αα = 0.10 level of significance? For this study, we should use Select an answer z-test for a population proportion t-test for a population mean The null and alternative hypotheses would be: H0:H0: ? μ p Select an answer ≠ = < > H1:H1: ? p μ Select an answer < ≠ = > The test statistic ? z t = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 4 decimal places.) The p-value is ? > ≤ αα Based on this, we should Select an answer fail to reject accept reject the null hypothesis. Thus, the final conclusion is that ... The data suggest the populaton…
The average size of a farm in one county is 162 acres with a standard deviation of 38 acres. The average size of a farm in a second county is 182 acres with a standard deviation of 16 acres. Assume the data were obtained from two samples that had 30 farms each. Can it be concluded that the average size of the farms in the two counties is different? (Let α = 0.05) First , choose which hypothesis statements is correct. T-stat = Round to 2 decimal places. P-value = Decision: Type Retain Ho or Reject Ho
“The average production of corn in the Philippines is 3,000 kgs. A new plan for food has been developed and is tested on 60 plots. The mean yield with the new plan on food is 3,200 kgs with a standard deviation of 600 kgs. At α = 0.05 level of significance, can you conclude that the production increased?” What test statistic is to be used on the given problem? a. t-test b. z-test c. left-tailed test d. right-tailed test
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Researcher believe that the standard deviation in the crime rate is decreased by 30. To detect such a decrease in the standard deviation for the standard deviation of 190, power of.at leastQ.90. with the level of significance 0.03. Determine and report the required sample size to detect such a difference (decrease):| Enter a number. If the decrease in standard deviation was 20 instead of 30, would the required sample size be less or more? O more less
The additional growth of plants in one week are recorded for 11 plants with a sample standard deviation of 1 inches and sample mean of 11 inches.
Please help me this calculations. Don't use excel please use hand. Thank you.
Is it more expensive to live in California or Florida? Monthly cost of living expenses for California are approximately Normal with mean μC=$10,800��=$10,800 and standard deviation σC=$3,200��=$3,200. Monthly cost of living expenses for Florida are approximately Normal with mean μF=$8,500��=$8,500 and standard deviation σF=$2,700.��=$2,700. Suppose we select independent SRSs of 16 residents of California and 9 residents of Florida and calculate the sample mean monthly cost of living, x¯C�¯� and x¯F�¯�. a. What is the shape of the sampling distribution of x¯C−x¯F?�¯�−�¯�? Why? b. Find the mean and standard deviation of the sampling distribution of x¯C−x¯F�¯�−�¯�. c. Calculate the probability that the average monthly cost of living expense of the 16 randomly selected California residents is less than the average monthly cost of living expense of the 9 randomly selected Florida residents.
The additional growth of plants in one week are recorded for 11 plants with a sample standard deviation of 2 inches and sample mean of 12 inches. t* at the 0.05 significance level = Ex: 1.234 Margin of error = Ex: 1.234 Confidence interval = [ Ex: 12.345 E, Ex: 12.345 ]
See the attached. Can i get some help with this one?
I need help with stats/2023, section 7.2 and 7.3, please help with TI-84 commands A car company says that the mean gas mileage for its luxury sedan is at least 22 miles per gallon (mpg). You believe the claim is incorrect and find that a random sample of 5 cars has a mean gas mileage of 21 mpg and a standard deviation of 5mpg. At α=0.10, test the company's claim. Assume the population is normally distributed. Which sampling distribution should be used and why? A. Use a normal sampling distribution because the population is normal, and σ is known. B. Use a normal sampling distribution because the population is normal, and σ is unknown. C. Use a t-sampling distribution because the population is normal, and σ is unknown. D. Use a t-sampling distribution because n<30. E. Use a t-sampling distribution because the population is normal, and σ is known F. Use a normal sampling distribution because n>30. Write out the appropriate hypotheses…

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