Mean Range Variance
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Q: a. Find the standard error comparing the sample means. Interpret. The standard error is se=
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A:
Q: Smith works as a welder inspector in a shipyard. He knows from keeping track of good and poor welds…
A: Let p denote the propprtion of poor welds. Given that p = 5% = 0.05 Sample size n = 300
Q: Kindly answer the following:
A: Given data: Science Math 85 120 76 85 73 73 80 70 72 80 84 34 79 72
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- 6 students were given a ball; each student’s ball was measured how high they threw the ball. Refer to the table below
|
Alex – 20 cm |
Harry – 38m |
|
Stella – 42 cm |
Gem – 85cm |
|
Aisha – 45cm |
Bob – 31cm |
Solve for:
Mean Range - Variance
- Standard Deviation
could you provide the steps in excel format
Step by step
Solved in 4 steps
- See pictures for questions a and b Problem Stone Mountain and Forest View are schools in different states. Boris is a student at Stone Mountain and is 49 inches tall. Tony is a student at Forest View and is 69 inches tall. The heights of students at Stone Mountain have a population mean of 54.6 inches and a standard deviation of 3.1 inches. The heights of students at Forest View have a population mean of 55.2 inches with a standard deviation of 5.4 inches. For each school, the distribution of the heights of students is clearly bell-shaped.Please answer the question in the picture below to answer the question in the other pictureA recent study evaluated how addicted teenagers become to nicotine once they start smoking. The response variable was the number of yes answers on a questionnaire called the Hooked on Nicotine Checklist (HONC). Of teenagers who had tried tobacco, the mean HONC score was 3.8 (s = 4.4) for the 141 females and 2.4 (s = 3.5) for the 178 males. Complete parts a through c below. a. Find the standard error comparing the sample means. Interpret. The standard error is se= 0.4540. (Round to four decimal places as needed.) What does the standard error indicate? ... OA. The standard error is the standard deviation of the sample for this study. OCT 28 OB. The standard error is the difference in standard deviations for the two populations. OC. The standard error is the standard deviation of the difference between x₁-x₂. D. The standard error describes the spread of the sampling distribution of x₁-x₂. b. Find the test statistic and P-value for Ho: H₁ H₂ and Ha: H₁ H₂. Interpret, and explain what (if…
- Need answers for question (d) and (e) without using the Ezcle formula . Show workingA scale is known to be "low-calibrated" in that it measures an aluminum bar to be 4 grams lower than the actual weight. If ????μold is the mean of all possible measurements of the bar using the old calibration, and ????μnew is the mean of all possible measurements of the bar using a re-calibrated scale. It is desired that ????−????=4μnew−μold=4. Consider the test ?0:????−????=4H0:μnew−μold=4 vs. ?0:????−????≠4H0:μnew−μold≠4 Sample after calibration: mean is 95.8 , SD is 4.9 and sample size is 10 Sample before calibration: mean is 89.352 , SD is 4.2 and sample size is 62 We do not know population standard deviations. What is the p-value? (Hint: best to use software, or else the Desmos Calculator for the 2 sample T and Z test)HOTSPOT LABEL The times (in seconds) of 8 runners for the 100-yard dash are recorded and used to determine the following calculations. Mean: 11.8 Median: 12.2 CO Mode: 12.5 Range: 3.2 The timekeeper had difficulties with the stopwatch and did not start the time until the runners had been running for 1.5 seconds. What would these calcula- tions be if this 1.5 seconds were added to each runner's 100-yard dash time? . Press each hotspot. Label the corresponding number below with the requested value. ▶ C «» Press to hear a reminder or hint for this problem. IQR: 2.4 100 All Charge
- What is the population standard deviation using the following formulaPlease answer the question in the picture below to answer the question in the other pictureThe authors of a paper were interested in how the distance a deer mouse will travel for food is related to the distance from the food to the nearest pile of debris. Distances were measured in meters. The data and computer output are given below. Distance from Debris Distance Traveled 6.94 0.00 5.23 6.13 5.21 11.29 7.10 14.35 8.16 12.03 5.50 22.72 9.19 20.11 9.05 26.16 9.36 30.65 Simple Linear Regression Results: Dependent Variable: Traveled Independent Variable: Debris Sample size: 9 R (correlation coefficient) = 0.5657 R-sq = 0.32002088 Estimate of error standard deviation 8.670711 Parameter estimates: Parameter Estimate Std. Err. Alternative DF T-Stat P-Value Intercept -7.6854587 13.332196 ≠ 0 7 -0.5764586 0.5824 Slope 3.2340908 1.7818117 ≠ 0 7 1.8150575 0.1124 a)What is the least squares regression line for the output given above? b) what is the predicted traveled distance given the distance from debris is 6.5 meters?
- The main way of baby deer at a local zoo is 15.8 pounds with a standard deviation of 2.4 pounds a researcher records the way of the following five baby deer 14.5 pounds 16.8 pounds 15 pounds 16.4 pounds in 15.9 pounds. find x and find sThe measure of dispersion that is influenced most by extreme values is Select one: a. the interquartile range b. the variance c. the standard deviation d. the rangeAssume that the readings on the thermometers are normally distributed with a mean of 0° and standard deviation of 1.00°C. A thermometer is randomly selected and tested. Draw a sketch and find the temperature reading corresponding to P34, the 84th percentile. This is the temperature reading separating the bottom 84% from the top 16%. Click to view page 1 of the table. Click to view page 2 of the table. Which graph represents P ? Choose the correct graph below. 84 A. В. OC. D. Ay X The temperature for P84 is approximately (Round to two decimal places as needed.)
