Calculate a 95% two-sided CI for the true average bond strength. (b) Calculate a 95% two-sided CI for the proportion of all such bonds whose strength values would exceed 10. show major intermediate steps.
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(a) Calculate a 95% two-sided CI for the true average bond strength.
(b) Calculate a 95% two-sided CI for the proportion of all such bonds whose
strength values would exceed 10.
show major intermediate steps.
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- 3. Suppose that the inside diameter of bulb lamp manufactured by a company are normally distributed with a sample of 200 bulb lamps, µ = 0.502 inches, and o = 0.005 inches. A bulb lamp will be considered defective if its diameter is less than 0.496 inches or greater than 0.508 inches. What is the percentage of defective bulb lamp produced by the company? What did the answer indicate?7. How many samples are possible of size 3 taken from the population 1, 2, 3, 5, 6 and 8? A. 20 B. 25 C. 30 8. What is the area under the normal curve at least? A. 15.87% C. 65.87% 9. B. 34.13% What do we call to the subgroups of populations? A. Samples B. Terms C. Parameters OVOLHOU WIDGalanter D. 35 D. 84.13% D. Average3. Suppose that the inside diameter of bulb lamp manufactured by a company are normally distributed with a sample of 200 bulb lamps, H=0.502 inches, and o 0.005 inches, A bulb lamp will be considered defective if its diameter is less than 0.496 inches or greater than 0.508 inches. What is the percentage of defective bulb lamp produced by the company? What did the answer indicate?
- 5. The average family size was reported at 3.18. A random sample of families in a particular community resulted in the following family sizes: 5 4 4 4 3 4 3 3 5 3 7 4 2 2 2 3 5 At a = 0.05, does the family size differ from the national average?1. Given the following observations on X: X: 14, 20, 18, 10, 8, 14, 16, 17, 9, 16, 16, 22, 20, 25, 15 a. Find the point estimate of the sample mean ...................................... b. Find the point estimate of the sample variance .......................................c. Find the point estimate of the sample standard deviation .......................................\.................................... The following frequency table for grades of 30 students Upper boundary Cumulative frequency 29.5 39.5 49.5 59.5 69.5 5 9 15 22 30 Median for this distribution Select one: а. 15 b. 69.5 c. Insufficient information to compute d. 49.5
- 5. The sample size for the tests of controls for the revenue cycle is 55, ARIA is 5%, and the number of deviations found was 2. The tolerable exception rate is 8%. Would the population be acceptable? A. Yes B. This cannot be determined C. No D. It is not a representative sample3. Suppose a new sample is chosen and you got the following estimated OLS line: predicted birthweight = 120 3.2x dailycigarettes. What would be your estimate of ß if birth weight were recorded in pounds? (Hint: 1 pound 16 ounces) OA. -0.15 OB. -38.4 OC. -2.4 OD. -0.21. A researcher wishes to determine if the following distances (in meters) traveled by a random sample of ten world-class long jumpers are highly affected by the speed (in meters per second) at takeoff. The distances recorded from the sample long jumpers are as follows: 7.67, 8.22, 7.94, 7.16, 8.08, 7.35, 7.89, 7.76, 7.25, and 7.43. On the other hand, the speeds are recorded as follows: 8.9, 9.2, 8.1, 8.6, 9.0, 8.4, 8.8, 9.1, 8.0, and 8.2. What will be the distance, assuming that the speed is 9.4 meters per second? Round your answer to two decimal places. There is no need to place the unit. 2. A certain regression line equation has the slope equal to 720.25 and an intercept that is equal to -182.4. What will be the predicted score for the dependent variable if the independent variable is 281.5? Round your answers to two decimal places. Do not place any unit.
- Assuming the footsizes of the Japan are normally distributed, do men and women differ in footsize in one class at 0.05 level of significance? M 21.5 22 22.5 23 23.5 24 24.5 25 25.5 26 26.5 27.5 28.5 29.5 30.5 31.5 W 21 21.5 22 22.5 23 23.5 24 24.5 25 25.5 26 27 Japan 28 29 30 31 4. Write a Hypothesis between these data of footsizes in Japan 5. Determine the tailed test and level of significance 6. Run the analysis (T-test for independent groups) using Microsoft Excel Data Analysis and state the conclusionSolve the following 1.) a.)What proportion of the t distribution with 11 degrees of freedom falls within t = -1.80 to t = 2.20? (Round to the nearest thousandth.)b.) What proportion of the t distribution with a sample size of 16, n=16, falls within t = 1.34 to t = 2.95? (Round to the nearest thousandth.) c.)What proportion of the t distribution with 23 degrees of freedom falls outside of t= -1.32 and t= 2.07 ? (Round to the nearest thousandth.) d.)What proportion of the t distribution with a sample size of 19, n=19, falls outside of t= 1.73 and t= 2.55 ? (Round to the nearest thousandth.)1. An analyst got the following values for the determination of NaCl in given water sample (in ppm): 78.2, 85.6, 81.4, 91.9, 87.5, 85.7, 90.1, 79.5, 90.3, 92.8 Find the (a) mean, (b) median, (c) %RSD