A police officer is concerned about speeds on a certain section of Interstate 90. The data accompanying this exercise show the speeds of 40 cars on a Saturday afternoon. (You may find it useful to reference the t table.) Click here for the Excel Data File (Data below is from excel) a. The speed limit on this portion of Interstate 90 is 62 mph. Specify the competing hypotheses in order to determine if the average speed of cars on Interstate 90 is greater than the speed limit. multiple choice 1 H0: μ = 62; HA: μ ≠ 62 H0: μ ≥ 62; HA: μ < 62 H0: μ ≤ 62; HA: μ > 62 b-1. Calculate the value of the test statistic. (Round final answer to 3 decimal places.) Highway Speeds 70 70 65 68 69 73 73 68 70 66 68 61 60 66 62 70 65 64 63 68 69 68 60 62 62 65 64 69 63 69 61 68 70 60 68 60 68 61 68 66 b-2 Find the p-value. multiple choice 2 p-value < 0.01 p-value 0.10 0.05 p-value < 0.10 0.025 p-value < 0.05 0.01 p-value < 0.025

A police officer is concerned about speeds on a certain section of Interstate 90. The data accompanying this exercise show the speeds of 40 cars on a Saturday afternoon. (You may find it useful to reference the t table.) Click here for the Excel Data File (Data below is from excel) a. The speed limit on this portion of Interstate 90 is 62 mph. Specify the competing hypotheses in order to determine if the average speed of cars on Interstate 90 is greater than the speed limit. multiple choice 1 H0: μ = 62; HA: μ ≠ 62 H0: μ ≥ 62; HA: μ < 62 H0: μ ≤ 62; HA: μ > 62 b-1. Calculate the value of the test statistic. (Round final answer to 3 decimal places.) Highway Speeds 70 70 65 68 69 73 73 68 70 66 68 61 60 66 62 70 65 64 63 68 69 68 60 62 62 65 64 69 63 69 61 68 70 60 68 60 68 61 68 66 b-2 Find the p-value. multiple choice 2 p-value < 0.01 p-value 0.10 0.05 p-value < 0.10 0.025 p-value < 0.05 0.01 p-value < 0.025

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

I need help with this question
A flight travels daily from Pittsburgh to San Antonio. The following list gives the arrival time relative to the scheduled arrival time (in minutes) for a selection of 17 days. (A negative number means that the flight arrived early.) −8, −4, −4, −3, −2, 1, 2, 3, 5, 7, 8, 8, 14, 18, 24, 28, 37 Send data to calculator Frequency 8. 6. 4 2. 5 -10 7 Answer the questions below. 2 0 10 20 30 Arrival time relative to 5:07 (in minutes) 2 (a) For these data, which measures of central tendency take more than one value? Choose all that apply. 1 Mean Median O Mode 40 None of these measures
A recent Nielsen analysis found that the typical U.S. smartphone user is spending an average of 220 minutes per day using apps. We speculate that the average time spent using apps for Generation X smartphone users (aged 41-56 years) is less than the national average. The hypotheses are Ho: H = 220 minutes versus Ha: µ < 220 minutes. Summary results from R are provided. Summary Statistics Std. Dev (s) Mean Sample Size (n) 205 minutes 63.25 minutes 31
Help with MD and Interquartile.
3. The number of goals scored by Wayne Gretzky was recorded for seasons 1978 – 1999. (Please note the data set has been ordered from smallest to the largest for your convenience). 5, 9, 11, 16, 23, 23, 31, 38, 40, 40, 41, 46, 51, 52, 54, 55, 62, 71, 73, 87, 92 A. Construct a stem-and-leaf display for the data and describe the shape of the distribution (symmetric, skewed left, skewed right, bell-shaped, etc., any obvious outliers). B. What is the fraction of the data that is less than or equal to 31? C. Given that Ex, = 920 and Ex = 52 436 find the mean and standard deviation. D. Find the (i) median, (ii) Q1, (iii)Q:, (iv) the interquartile range (IQR), (v) the lower and upper fences. E. Construct a Box-plot for the data. What are your conclusions about the shape of the distribution? Compare with the results in Part A. F. Would the mean or the median be the most suitable measure to use to represent the central location of this distribution? Give reasons for your answer.
Please help with this problem. Can you please explain using a calculator. Thank you.
What is the answer to this problem?
The table pertains to scheduled commercial carriers. Fatalities data include those on the ground except for the September 11, 2001, terrorist attacks. Use this information given in the table. For fatalities the mean an = 66.7 the median = 14.5 and the mode = 2 2. The year 2001 was clearly an anomaly. If the data for that year is reduced by 239 fatalities, which of the three measures change and what are their new values for each of the following? please help:(
Please see image for Question.
If we multiply the data values by a constant (say, c), how this will affect the geometric mean? Use the equation in image to prove it, and give an example.
The results of a recent study show that the proportion of people in the western United States who use seat belts when riding in a car or truckis under 84%. You want to support this claim.
BMX racing is a sprint sport where races range from around 30 to 45 seconds depending on the length of the track. Given races are over in such a short time, the start - commonly referred to as gate starts due to everyone lining up on a gate, are critical to success in the sport. A coach with a particular interest in data analysis coaching an elite athlete records data at a local racetrack for the time it takes their athlete to reach the bottom of the starting hill. The coach has found that the hill times for their athlete follow a normal distribution with mean 2.3 seconds and standard deviation 0.02 seconds. (a) What hill time distinguishes the slowest 10% of hill times? (b) What is the probability that a randomly selected hill time is less than 2.27 seconds? (c) Let X be the number of hill times that are less than 2.27 seconds from 10 separate starts. Assuming the athlete is well rested between starts, what distribution might you consider X to follow. Justify your response by…