SAT coaching: A sample of 10 students took a class designed to improve theirSAT math scores. Following are their scores before and after the class. Can youconclude that the mean increase in scores is greater than 1s points? Let ,represent the mean score after the class and ,=4,-4. Use the a=0.10 level andthe p-value method with the TI-84 Plus calculator.deScoreBefore 447440439 435 451 453 491526 473 440After48247945143145446311529493466Send data to ExcelPart: 0 /4Part 1 of 4(a) State the appropriate null and alternate hypotheses.HoHThis is a (Choose one)test. Part 2 of 4(b) Compute the p-value. Round the answer to at least four decimal places.P-valueCorrect Answer:P-value = 0.9767Part 3 of 4Determine whether to reject HDo not reject the null hypothesis.Part 4 of 4(c) State a conclusion.There is notv enough evidence to conclude that the mean emissions arelower at 40 F.

There is always some contention about the value of a parameter or the relationship between…

Answered: (b) Compute the p-value. Round the…

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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section 10.6 Step 1 of 5 : State the hypotheses in terms of the standard deviation. Round the standard deviation to four decimal places when necessary. 2 of 5: Determine the critical values of the test statistic 3 of 5: determine the value of the test statistic 4 of 5: make a decision: reject the null, or fail to reject 5 of 5: what is the conclusion? is there sufficient evidence or not?
I regress Y on X and get the following information. Standard errors are in parentheses. Calculate the t-statistic on my coefficient (beta-hat), rounding to the nearest hundredth. Y-hat-469.31+73.626*X (159.836) (59.273)
Question 4 Use the empirical rule to solve the problem. The amount of Jen's monthly phone bill is normally distributed with a mean of $58 and a standard deviation of $12. What percentage of her phonė bills are between $22 and $94? O 99.99% O 99.7% O 68% O 95% « > A Moving to another question will save this response. 4:42 PM rch 3/25/2021 DII FS PrtScn Home F9 End F10 PgUp PgDn F11 F12 F6 F7 F8 4. 5 6 8. 9. E R T Y U D F G H J K L
Solve B to D
Q9: A certain manufacturing process requires that a small hole be drilled into the centre of a metal plate. To regulate that the size of the hole is adequate, samples are taken daily, and the diameters of these holes are measured in mm. The data below is the diameters of the holes drilled in 1st week of January 2022. 3.9 2.53 2.46 2.52 Calculate: (i) Mean (ii) Medium 2.45 (iii) Mode (iv) Standard deviation to three significant figures. (v) Interpret the data shown on frequency bar chart or Histogram 2.53 2.57 2.52
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parts of question 7. solve A-E A. Compute P(X = 3) for n = 5, p = 1 B. Ken is a waiter at a restaurant. His customers tip 15% or more 80% of the time. Find the probability that four of the next six customers will tip 15% or more? C. Find the z-score if x = 2.65, mean = 0, σσ = 1.0. D. An IQ test has a mean of 100 and standard deviation of 15. Find what percentile is someone who scored a 122 on an IQ score? E. A normal distribution has a mean of 168 and a standard deviation of 10. Find the percentage of scores that fall between 155 and 169.
Question 6 please
Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean of 0°C and a standard deviation of 1.00°C. A single thermometer is randomly selected and tested. Find the probability of obtaining a reading less than -2.451 C. P(Z < - 2.451) (Round your answer to 4 decimal places.) Submit Question 9. 3 y W e
2. Suppose that we are testing Ho following observed values of the test (a) Zo= 2.45 (b) Zo= -1.53 = po versus H₁>po. Calculate the p-value for the statistic: (c) Zo= 2.15 (e) Zo= -0.35 (d) Zo = 1.95
6.2
Answer 10 11 12 handwritten

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