A | B | |
3 | 3 | |
5 | 5 | |
5 | 5 | |
5 | 5 | |
8 | 8 | |
11 | 11 | |
11 | 11 | |
11 | 11 | |
13 | 20 | |
8 | 8.78 | Mean |
3.61 | 5.21 | SD |
A. Mean of A < mean of B
C. standard deviation of A < standard deviation of B
A | B | |
-20 | -40 | |
0 | 0 | |
0 | 0 | |
0 | 0 | |
15 | 15 | |
25 | 25 | |
30 | 30 | |
30 | 30 | |
10 | 7.50 | Mean |
17.93 | 23.30 | SD |
C. mean of A > mean of B
C. standard deviation of A < standard deviation of B
points Means 8nd SDs. Fo each pert. com pe e derbutions A 8 d besed on...
1.47 Means and SDs. For each part, compare distributions (1) and (2) based on their means and standard deviations. You do not need to calculate these statistics; simply state how the means and the standard deviations compare. Make sure to explain your reasoning. Hint: It may be useful to sketch dot plots of the distributions. (a) (1) 3, 5, 5, 5, 8, 11, 11, 11, 13 (2) 3, 5, 5, 5, 8, 11, ії, 11, 20 (c) (1) 0, 2,...
Means and SDs For each part, compare distributions (1) and (2) based on their means and standard deviations. You do not need to calculate these statistics; simply state how the means and the standard deviations compare. You will need to look at Exercise 1.47 in OpenIntro Statistics to answer these questions There are two correct answers to each part below; select them both. 1.47 Means and SDs. For each part, compare distributions (1) and (2) based on their means and...
The lives of 100 batteries of Brand D and 100 batteries of Brand E were determined. The results ane Exercises 11-15 summarized in the histograms below. Brand D 40- 30- 20- 10- 105 165 85 125 95 115 135 145 155 ife (hours) nol Brand E 35 30 STE 25 20 15 10 95 65 115 Life (hours) 155 105 135 145 125 isuanbeu kousnbeu 11 Estimate the mean battery life for Brand D. (Do not do any calculations.) are...
1. Scores on an IQ test for the 18-to-30 age group are approximately normally distributed with a mean of 110 and a standard deviation 25. Scores for the 31-to-40 age group are approximately normally distributed with mean 100 and standard deviation 20. Phoebe, who is 25, scores 130 on the test. Amandeep, who is 36, also takes the test and scores 116. Who scored higher relative to her age group, Phoebe or Amandeep? a) Phoebe b) Amandeep c) They scored...
Network Diagrams & PERT Question: We are remodeling the da Vinci Lounge in the Spencer Engineering Building. A. Identify the critical path B. Identify the slack for each element C. Identify the most and least sensitive element D. Identify the predicted project duration (TE) E. Z is the number of standard deviations from the mean found in the statistical table below, and defined by the relationship: Z = (Ts - TE) / SQRT(Σσte2 ) where only critical path σte are...
Complete parts (a) through (d) for the sampling distribution of the sample mean shown in the accompanying graph. Click the icon to view the graph. (a) What is the value of us? The value of his (b) What is the value of 0;? The value of oz is (c) If the sample size is n=16, what is likely true about the shape of the population? OA. The shape of the population is approximately normal. B. The shape of the population...
Complete parts (a) through (d) for the sampling distribution of the sample mean shown in the accompanying graph. Click the icon to view the graph. (a) What is the value of w;? The value of n; is (b) What is the value of o:? The value of ozis (c) the sample size is n=9, what is likely true about the shape of the population? O A. The shape of the population is skewed right. OB. The shape of the population...
12. As the number of degrees ot trdom ort d n s the the t distribution andd the standard nomal dist becomes larger b becomes smalter stays the same huctuates. d. 13. In interval esionation, thet distribution is applicatle ondy when a. the population has a mean of tess than 30 b. the sample standard deviation is used to estimate the population standard deviation the variance of the population is known d. the mean of the population is unknown. C....
8 0.05 10 0.05 13 0.17 0.16 15 0.17 20 02 21 23 0.1 00 0.0 0.0 a) P(x > 10) b) P(x>10) c) P(x < 20) d) P(x = 8 or x = 10) e) The mean for variable x f) The standard deviation for variable x. 3. 2 IX P(x) 30 6 0.16 10 0.05 11 0.05 16 0.1 20 0.2 25 0.1 0.2 a) P(x>6) b) P(x211) c) P(x < 10) d) Pix = 11 or x...
8. A student scores 56 on a geography test and 285 on a mathematics test. The geography test has a mean of 80 and a standard deviation of 20. The mathematics test has a mean of 300 and a standard deviation of 10. If the data for both tests are normally distributed, on which test did the student score better relative to the other students in each class? (You must show proper work to receive credit on this problem) 9....