As the sample size increases, the t distribution becomes more similar to the ____________________ distribution. A.binomial B.chi-square C.normal D.exponential
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Q: Terri Vogel, an amateur motorcycle racer, averages 129.36 seconds per 2.5 mile lap (in a 7 lap race)…
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Q: d. The middle 50% of her laps are from seconds to seconds.
A: Denote the random variable X as the number of seconds. Thus, X~ N (129.23, 2.28).
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- Terri Vogel, an amateur motorcycle racer, averages 129.23 seconds per 2.5 mile lap (in a 7 lap race) with a standard deviation of 2.28 seconds. The distribution of her race times is normally distributed. We are interested in one of her randomly selected laps. (Source: log book of Terri Vogel) Let X be the number of seconds for a randomly selected lap. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X NO b. Find the proportion of her laps that are completed between 127.32 and 128.45 seconds. c. The fastest 4% of laps are under d. The middle 50% of her laps are from seconds. seconds to seconds.J 2ch 13
- Terri Vogel, an amateur motorcycle racer, averages 129 seconds per 2.5 mile lap (in a 7 lap race) with a standard deviation of 2.26 seconds . The distribution of her race times is normally distributed. We are interested in one of her randomly selected laps. (Source: log book of Terri Vogel) Let X be the number of seconds for a randomly selected lap. Round all answers to 4 decimal places where possible. question: The middle 50% of her laps are from _____ seconds to _______ seconds.Suppose that the length of long distance phone calls, measured in minutes, is known to have an exponential distribution with the average length of a call equal to $24 minutes. The 16th percentile is a phone call that lasts minutes.Data from a state indicate that scores on the SAT test are normally distributed with a mean of 994 and a standard deviation of 204. Scores on the ACT test are normally distributed with a mean of 20 and a standard deviation of 5.1. It is assumed that the two tests measure the same aptitude, but use different scales.If a student gets an SAT score that is the 77 percentile, find the actual SAT score. Round answer to a whole number. SAT score = What would be the equivalent ACT score for this student? Round answer to 1 decimal place. ACT score = If a student gets an SAT score of 1280, find the equivalent ACT score. Round answer to 1 decimal place. ACT score =
- Snapchat has more than 200 million daily users sending over 3 billion snaps a day. Suppose that: The time X between snaps you received is governed by: Exponential distribution, u = 8 minutesSuppose in 2000, the science scores for female students had a mean of 146 with a standard deviation of 35. Assume that these scores are normally distributed with the given mean and standard deviation. _________________ of the female students scored between 76 and 216only b, c, and d
- i need the answer quickly4b.) Draw the graphs. Round your final answers up to 6 decimal places, if applicable. Give the correct units.Using the square root of x sign above, you will be able to find symbols and equations. Subscripts are also at the top. X2 X2 Now that you have calculated SS. Calculate variance and standard deviation using the same distribution of scores from a population. 3, 7, 8, 5, 6, 4, 9, 10, 7, 8, 6, 5
