6-The following data are based on random sample taken from two shifts in a certain factory. The variableof interest is the length of time (X) required to perform a certain task.Shift 1>Shift 2n->∙10→>>89.1 →7.6σ1.8->2.11Is there any difference, between shift one and shift two, in the length of time requires to finish a certaintask? Let α = 0.05.

Interpretation:Based on the p-value, we decide to reject the null hypothesis or not.By following…

Answered: 6-The following data are based on…

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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Use the following data to answer question 8 - 12. A number of studies have claimed evidence that the first-born in a family is, on the whole, more likely to be "successful" than later-borns. A study along this direction compared the IQs of a random sample of 80 first-borns with those of an independent random sample of 105 later-borns. The data are summarized below: Sample size Sample mean Sample SD First-borns 80 112 7.2 Later-borns 105 108 8.0
S2. Assume that x₁,...,10 € R satisfy ₁₁ = 3 and ΣΩ1x? standard deviation of ₁,... , X10? i=1 i=1 (This question appeared as is in May 2018 exam) = 10. What is the sample
3 3 A shipping company handles containers in three different sizes. 27/³ (3×3×3) 125ft³ x, (i) = (1, 2, 3) denote the number of type i containers shipped during a given week. With μ = E(x) and 2 o = V(x), suppose that the mean values and standard deviations are as follows. i A shipping company handles containers in three different sizes. 1. 27 ft (3 x 3 x 3) 2. 125 ft3 3. 512 ft³ H₁ = 300, H₂ = 500, 3 = 50 o₁ = 12,0₂ = 8,0 = 10 Suppose that the x, 's are independent with each one having a normal distribution. What is the probability that the total volume shipped is at most 3 100,000ft? (Round your answer to four decimal places.) #₁ = 300 %₁ = 12 H₂ = 500 %₂ = 8 3 512ft ³ Let X, (i = 1, 2, 3) denote the number of type i containers shipped during a given week. With μ, = E(X) and o2 = V(X;), suppose that the mean values and standard deviations are as follows. Let C H3 = 50 3 = 10 USE SALT Suppose that the X's are independent with each one having a normal distribution. What is the…
#1. A random sample is to be selected from a normal population with µ= 120 and o=21. (a) Determine the mean and standard deviation of the sampling distribution of xwhen n = (b) How large would n have to be to for o- to be less than or equal to 2.0? = 49.
4.111 Work with a transformation. Here is a probability distribution for a random variable X: lls balls. Value of X T Probability 3 0.4 7 T 0.6 2011 (a) Find the mean and the standard deviation of this distribution. 80 21000 ried to thod isdı 29ilqıni zniT (b) Let Y = 4X - 2. Use the rules for means and variances to find the mean and the standard deviation of the distribution of Y. (c) For part (b), give the rules that you used to find your answer.
The Volatility X for the S&P stock index on a given day is a normal random variable with mean = 10 and standard deviation = 2 The volatilities recorded over a 100-day period on the S&P500 are Y1, Y2, ... Y100. Assume that these Yi's are independent and identically distributed, uniform on the interval [5,15]. Let V = (Y1 + Y2 + ... + Y100)/100. What approximately is P[9.5 < V < 10.5]?
Estimate ff e+y“ dA with R = [0, 3] × [0, 3] using m = n = 2 and midpoints as your R sample points.
6.2/3
1. You are interested in the effect of a new learning technique. The performance score on the test before applying the new learning technique is 50 (u=50), the standard deviation is 4 (o=4). You obtained a sample of 64 subjects and applied the new learning technique. After that, their performance score on the test increased by 2 (x=52). Did the new learning technique improve/had any effect on the performance? The answer, using 4 steps of hypothesis testing. Please use APA style to report your result. Assume that a-level=.05 2. You are interested in the effect of a new learning technique. The performance score on the test before applying the new learning technique is 50 (u=50), the standard deviation is 24 (o=24). You obtained a sample of 64 subjects and applied the new learning technique. After that, their performance score on the test increased by 2 (x=52). Did the new learning technique improve/had any effect on the performance? The answer, using 4 steps of hypothesis testing.…
6.2
Need only handwritten solution only (not typed one).
Example 9-4. X is a normal variate with mean 30 and S.D. 5. Find the probabilities (i) 26 45, and (iii) |X – 30l > 5.

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