A data set includes 106 body temperatures of healthy adult humans having a mean of 98.7°F and a standard deviation of 0.66°F. Construct a 99% confidence interval estimate of the mean body temperature of all healthy humans. What does the sample suggest about the use of 98.6°F as the mean body temperature? Click here to view a t distribution table. Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. What is the confidence interval estimate of the population mean µ? °F
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- For all named storms since 2000, it is recorded for each whether it made landfall in the United States or not (yes or no). Whether a named storm made landfall in the United States or not is what type of characteristic? Categorical variable Constant Continuous quantitative variable Discrete quantitative variableintrepreat the following table that wheather the value is statistically significant or not. Coefficientsa Model Unstandardized Coefficients Standardized Coefficients t Sig. B Std. Error Beta 1 (Constant) 9.860 .378 26.116 .000 ln_R1_91 -.459 .218 -.946 -2.112 .088 ln_R2_182 2.796 .528 4.318 5.294 .003 ln_R3_364 -2.842 .428 -3.966 -6.647 .001 ln_R4_INF -1.255 .183 -.762 -6.875 .001 a. Dependent Variable: ln_NEPSEQuestion 16 A large department store has collected the following monthly data on lost sales revenue due to theft and the number of security guard hours on duty. RUN A REGRESSION IN EXCEL, INCLUDING DUMMY VARIABLES for the qualitative information provided. Use the Weekday as the 0-0. Answer the following question: What is the value of the Guard Hours B1 variable? Lost Sales Total Security Time Revenue Guard Hours Occurred 1 600 1.4 630 Weekday Weeknight 1.9 1000 Weekday 2 1200 Weeknight 1.8 950 Weekday 2.1 1300 Weekend 2.3 1350 Weekend OA. 277619 OB..097706 OC.-.01937 D. .001511 OE-586853
- Number of P(x= Xi) accidents daily o 0.10 1 0.20 2 0.45 3 0.15 4 0.05 5. 0.05 compute the mean number of accidents per dayQ5\Data recorded in table below by observing the activity of a single customer line during an eight-hour period from 9:00 A.M. to 5:00 P.M. Find the traffic intensity during the eight-hour period, and during busy hour (which occurs between 4:00 P.M. and 5:00 P.M.). Call no. Call started Call ended Call duration (min.) 3.0 1 9:15 9:18 2 9:31 9:41 10.0 3 10:17 10:24 4 10:24 10:34 5 10:37 10:42 6 10:55 11:00 7 12:01 12:02 8 2:09 2:14 9 3:15 3:30 10 4:01 4:35 11 4:38 4:43 7.0 10.0 5.0 5.0 1.0 5.0 15.0 34.0 5.0mg ). The total blood cholesterol level was mneasured for each of 20 adults. Here are the 20 measurements (in dL 132, 142, 157, 160, 165, 170, 178, 178, 178, 183, 194, 197, 197, 199, 203, 210, 219, 222, 231, 238 Send data to calculator Send data to Excel Frequency 8. 4 4 4- 2. 125 150 175 200 225 250 Cholesterol level (in mg/dl)
- A special bumper was installed on selected vehicles in a large fleet. The dollar cost of body repairs was recorded for all vehicles that were involved in accidents over a 1-year period. Those with the special bumper are the test group and the other vehicles are the control group, shown below. Each "repair incident" is defined as an invoice (which might include more than one separate type of damage). Statistic Test Group Control Group Mean Damage x¯1x¯1 = $ 1,101 x¯2x¯2 = $ 1,766 Sample Standard Deviation s1 = $ 696 s2 = $ 838 Repair Incidents n1 = 12 n2 = 9 (a) Construct a 90 percent confidence interval for the true difference of the means assuming equal variances. (Round answers to 3 decimal places. Negative values should be indicated by a minus sign.) (b) Repeat part (a), using the assumption of unequal variances with Welch's formula for d.f. (Round answers to 2 decimal places. Negative values should be indicated by a minus sign.) (d) Construct separate…X G How do stereotypes affect social Xt https://wccs.instructure.com/courses/3721/assignments/73999 MTH 112 (20217) E-Learning Assignments > Quiz 1 (1.1-1.5) Quiz 1 (1.1-1.5) ing 2019 ome Wright MTH112 20217 E-Learning Spring 2019 yLab and astering nouncements ades llabus odules nferences at ainfuse gister Blast abama Virtual rary CCS Library aluations and rveys Review Quiz: Quiz 1 (1.1-1.5) Score: 0.5 of 1 pt &1.4.25 2 of 12 the point-slope form of the line satisfying the given conditions. Then use the point-slope form of the equation to write th Passing through (8,16) and (9.18) Type the point-slope form of the equation of the line у-16-2(x-8 (Simplify your answer. Use integers or fractions for any number in the equation.) Type the slope-intercept form of the equation of the line y=2x (Simplify your answer. Use integers or fractions for any number in the equation.) Question is complete. Tap on the red indicators to see incorrect answers Previous re to searchA special bumper was installed on selected vehicles in a large fleet. The dollar cost of body repairs was recorded for all vehicles that were involved in accidents over a 1-year period. Those with the special bumper are the test group and the other vehicles are the control group, shown below. Each "repair incident" is defined as an invoice (which might include more than one separate type of damage). Statistic Test Group Control Group Mean Damage X¯¯¯1X¯1 = $ 1,077 X¯¯¯2X¯2 = $ 1,800 Sample Std. Dev. s1 = $ 693 s2 = $ 814 Repair Incidents n1 = 16 n2 = 13 Source: Unpublished study by Thomas W. Lauer and Floyd G. Willoughby. (a) Construct a 90 percent confidence interval for the true difference of the means assuming equal variances. (Round your final answers to 3 decimal places. Negative values should be indicated by a minus sign.) The 90% confidence interval is from to (b) Repeat part (a), using the assumption of unequal variances with Welch's…
- A special bumper was installed on selected vehicles in a large fleet. The dollar cost of body repairs was recorded for all vehicles that were involved in accidents over a 1-year period. Those with the special bumper are the test group and the other vehicles are the control group, shown below. Each "repair incident" is defined as an invoice (which might include more than one separate type of damage). Statistic Test Group Control Group Mean Damage X¯¯¯1X¯1 = $ 1,153 X¯¯¯2X¯2 = $ 1,751 Sample Std. Dev. s1 = $ 663 s2 = $ 820 Repair Incidents n1 = 16 n2 = 14 Source: Unpublished study by Thomas W. Lauer and Floyd G. Willoughby. (a) Construct a 99 percent confidence interval for the true difference of the means assuming equal variances. (Round your final answers to 3 decimal places. Negative values should be indicated by a minus sign.) The 99% confidence interval is from to (b) Repeat part (a), using the assumption of unequal variances with Welch's…Diagnostic Tests: Total Calcium U has been treated for tetany (severe muscle spasms). This condition is associated with an average total calcium level below 6 mg/dL (Reference: A Manual of Laboratory and Diagnostic Tests by F. Fischbach). Recently, the patient's total calcium tests gave the following readings (in mg/dL): ver the past 9.3 8.8 10.1 8.9 9.4 9.8 10.0 9.9 11.2 12.1 ) Use a calculator to verify that = 9.95 and s ) Find a 99.9% confidence interval for the population mean of total calcium in this patient's blood. L) Interpretation Based on your results in part (b), does it seem that this patient still has a calcium deficiency? Explain. 1.02.Existing data (year: 1995) (Observed values) * Age group of drivers Accident Severity 18-30 30-50 50+ Fatal 27 22 40 Grievous 27 15 44 injured Minor 82 60 120 97 Total 89 86 262 injury Total 136 204 437 Source: Office of the Dy. Commissioner of Police (Tra