Length of snowboards in a boardshop are normally distributed with a mean of 152.4cm cm and a standard deviation of 0.5 cm. The figure below shows the distribution of the length of snowboards in a boardshop. Calculate the shaded area under the curve. Express your answer in decimal form with at least two decimal place accuracy. Answer:

c. Identify the mean and standard deviation of x. Choose the correct answer below. O A. µ and О В. н аnd o C. and O D. and o 이들

Find the area of the shaded region. The graph to the right depicts IQ scores of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15. The area of the shaded region is (Round to four decimal places as needed.) 104 132

Please see attached.

Please answer a and b

The blood pressure in millimeters was measured for a large sample of people. The average pressure is 140 mm, and the SD of the measurements is 20 mm. The histogram looks reasonably like a normal curv Use the normal curve to estimate the following percentages. Choose the answer that is closest to being correct. A 19.1% B 30.9% C 38.2% D 69.1% E 68.27% A The percentage of people with blood pressure between 130 and 150 mm. B The percentage of people with blood pressure between 140 and 150 mm. D The percentage of people with blood pressure over 150 mm.

The amount of caffeine in a sample of five-ounce servings of brewed coffee is shown in the histogram. Make a frequency distribution for the data. Then use the table to estimate the sample mean and the sample standard deviation of the data set. Click the icon to view the histogram. Complete the table. Round values to the nearest tenth as needed. Graph/chart f Midpoint x xf 70.5 Ay 30- 92.5 26 25- 114.5 136.5 20- 158.5 15- 12 Ef = Exf = 10- Find the mean of the data set. 5- X = (Round to the nearest tenth as needed.) 48.5 70.5 92.5 114.5 136.5 158.5 Complete the table. Round values to the nearest tenth as needed. Midpoint x (x-x)? (x-x)?f X-X 70.5 Print Done 92.5 114.5 136.5 158.5 (x-x)?r= ] of

The Ahmadi Corporation wants to increase the productivity of its line workers. Four different programs have been suggested to help increase productivity. Twenty employees, making up a sample, have been randomly assigned to one of the four programs and their output for a day's work has been recorded. You are given the results below. At 95% confidence, conduct the ANOVA test to determine whether there is a significant difference in the mean output under the four programs. Program A Program B Program C Program D 150 150 185 175 130 120 120 135 180 160 145 110 Part of the ANOVA table is shown below. Source of Variation Sum of Squares 8,750 Between Groups Within Groups 16,350 Total 220 190 180 175 d.f. 19 150 120 130 175 Mean Square

Construct a normal quantile-quantile plot of the values provided in the accompanying data set, which represent the diameters of 36 rivet heads in 1/100 of an inch. Click the icon to view the diameter data. Choose the correct graph below. A. Normal Quantile-Quantile Plot Normal Quantile-Quantile Plot 5.95- 5.85- 5.75- 5.65- 0.2 0.4 0.6 0.8 1 5.65 5.75 5.85 5.95 Theoretical Quantities Theoretical Quantities D. Normal Quantile-Quantile Plot Normal Quantile-Quantile Plot 5.95- 1- 5.85- 0.5- 5.75- • 000 0- 5.65- -2 5.95 -1 1 5.65 5.75 5.85 Theoretical Quantities Theoretical Quantities Diameter data 5.83 5.77 5.81 5.73 5.73 5.75 5.85 5.84 5.83 5.89 5.71 5.83 5.71 5.81 5.87 5.81 5.84 5.74 5.83 5.84 5.78 5.76 5.71 5.87 5.82 5.78 5.75 5.82 5.89 5.79 Help me solve this View an example Get m 5.71 5.85 5.85 5.78 5.76 5.71 C. Sample Quantities Sample Quantities B. Sample Quantities Sample Quantities of

Assume the readings on thermometers are normally distributed with a mean of 0°C and a standard deviation of 1.00°C. Find the probability that a randomly selected thermometer reads between - 1.94 and -1.06 and draw a sketch of the region. Click to view page 1 of the table. Click to view page 2 of the table. Sketch the region. Choose the correct graph below. O A. O B. O C. W W -1.94 -1.06 -1.94 -1.06 -1.94 -1.06 The probability is (Round to four decimal places as needed.)