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- n. ln. N Ciectical Cnyineers GToup as Cv = 40.32 % The following data represent the results obtained from the specific gravity (S.G.) test performed ina soil laboratory including * ?for sand samples. Find the mode Number of Specific Gravity 2.30-2.39 Samples 2.40-2.49 2.50-2.59 4 6. 2.60-2.69 12 2.70-2.79 14 2.80-2.89 2 3.35-3.40 2.10-2.15 2.20-2.25 2.70-2.75 2.80-2.85 2.30-2.35 2,60-2.65 2.40-2,45 2.50-2.55 2.90-2.95 ارفع اجابتك بشكل ملف wdf او صورة 1O 0O 10 O O O O O1. A bearing used in an automotive application is supposed to have a nominal inside diameter of 1.5 inches. A random sample of 20 bearings is selected and the data on the inside diameter is as follows: 1.48 1.50 1.51 1.495 1.487 1.505 1.48 1.52 1.50 1.515 1.501.49 1.49 1.509 1.489 1.49 1.512 1.51 1.495 1.50 Bearing diameter is known to be approximately normally distributed with a standard deviation of 0.01 in. Test the hypothesis that the mean inside diameter has changed. Use a 0.01 significance level. 2. A producer of chocolate bars hypothesizes that his production does not adhere to the weight standard of 100g. As a measure of quality control, he weighs a random sample of 15 bars and obtains the following results in grams:96.40, 97.64, 98.48, 97.67, 100.11, 95.29, 99.80, 98.80, 100.53, 99.41, 97.64, 101.11, 93.43, 96.99, 97.92. It is assumed that the production process is standardized in the sense that the variation is controlled to be σ = 2. Is there sufficient evidence to support…A die was rolled 360 times and the results were: No. of Spots (outcomes) Frequency 1 54 2 70 3 58 4 62 5 50 6 66 Is the die balanced at a = 0.05? Determine the test statistic to be used. O A. Chi-square test B. z-Test O C. t-Test O D. F-test
- The Figure below shows the calibration curve for the determination of an analyte. Knowing that the replicas of a sample showed the following signs: 0.114; 0.117 and 0.115, answer: Which option below shows the mean concentration (mg/L), standard deviation (mg/L) and relative standard deviation (%), respectively? a) 144.5 mg/L; 6.7 mg/L and 1%b) 244.5 mg/L; 3.3 mg/Le 10%c) 227.9 mg/L; 3.1 mg/l and 1% In the graph, the y axis represents the signal and the x axis the concentration mg/LThe age of a tree can be determined by counting each annual growth ring in the trunk of the tree. A common measure of the size of a tree is the "diameter at breast height" DBH. "Breast height" is defined as 4 ½ feet above the uphill side of the tree. Consider the following data on 12 northern red oaks from southwestern Wisconsin: 11 15 28 1.5 1.0 6.0 45 12 52 16.5 11.0 | 10.5 9.0 Age(years) | 97 93 88 81 75 57 1.0 DBH(inch) | 12.5 12.5 8.0 9.5 d) What is the range of validity of this model?A die was rolled 360 times and the results were: No. of Spots (outcomes) Frequency 1 54 2 70 3 58 4 62 5 50 6 66 Is the die balanced at a = 0.05? Determine the tabular value. OA. 18.5476 OB. 11.0705 O C. 12.5916 OD. 16.74
- Exhibit 10-11An insurance company selected samples of clients under 18 years of age and over 18 and recorded the number of accidents they had in the previous year. The results are shown below. Under Age 18 Over Age 18 n1 = 500 n2 = 600 Number of accidents = 180 Number of accidents = 150 We are interested in determining if the accident proportions differ between the two age groups. Refer to Exhibit 10.11. The p-value is _____. Group of answer choices less than .001 more than .10 .0228 .3A truck company decides that every year, the distance traveled for the truck usually distributed normally with average traveled 50.0 thousands miles and the standart deviation os 12.0 thousands miles Questions A. How many of the 1,000 trucks in the fleet are expected to cover between 30.0 and 60.0 thousand miles this year B. How many miles will at least 80% of the trucks travel C. How many of the 1,000 trucks in the fleet are expected to cover between 30.0 and 60.0 thousand miles this year, if the standart deviation is changed to 10 thousands milesAsap
- calculate the number of hydrogen atoms in a 140.0g sample of tetraborane (B4H10)?Everest auto industry produces bearing for Mahindra Motor Corporation. The precision of radius of bearing is very important for its successful functioning. To check the variability in the bearing radius, the company randomly selected ten bearings and measured the radius, the result of which is as shown in the table below. #no Nominal radius (cm) #no Nominal radius (cm) 1 2.70 6 2.59 2 2.65 7 2.73 3 2.75 8 2.64 4 2.55 9 2.88 5 2.76 10 2.83 Calculate the sample standard deviation for the above data. Construct a box plot and check whether there is any outlier data in the data distribution. Based on the comparison between the mean and the quartile, identify the shape of the data distribution. Calculate the 65th percentile and interpret the result. What is the range of the data distribution? Explain its meaning.A random sample of n= 100 observations is selected from a population with p= 29 and o=24. Complete parts a through f. Click the icon to view the table of nomal curve areas. Normal Curve Areas Find and o- a. .00 .01 .02 .03 .04 .05 .06 .07 .08 .09 .0 .1 .0000 .0398 .0793 .0040 .0438 .0080 0478 .0871 .1255 1628 .1985 .0120 0517 .0910 .1293 1664 2019 .0160 .0557 .0948 1331 1700 2054 .0199 .0596 .0987 .1368 1736 2088 .0239 .0636 1026 1406 .1772 2123 .0279 0675 .0319 .0714 .1103 .1480 0359 0753 .0832 .1217 .1064 1443 .1141 1517 1879 2224 .3 .1179 .1554 1915 .1591 1808 1844 2190 .5 .1950 .2157 2257 .2580 .2881 .3159 .3413 .2291 2611 .2910 .3186 .3438 .2324 2642 2939 3212 3461 2357 2673 2967 3238 2389 2704 2995 3264 .3508 .2422 2734 .3023 3289 3531 2454 2764 3051 3315 .3554 2486 2794 3078 3340 3577 2517 2823 3106 3365 .3599 2549 2852 3133 3389 3621 .9 1.0 .3485 1.1 .3643 .3849 .4032 .4192 .4332 3686 3888 4066 .4222 .4357 .3665 .3708 3907 4082 .4236 4370 .3729 .3925 .4099 4251 4382 3749 3944…