4.36 Speeding on the l-5, Part I. The distribution of passenger vehicle speeds traveling on the Interstate 5 Freeway (I-5) in California is nearly normal with a mean of 72.6 miles/hour and a standard deviation of 4.78 miles/hour. (a) What percent of passenger vehicles travel slower than 80 miles/hour? (b) What percent of passenger vehicles travel between 60 and 80 miles/hour? (c) How fast do the fastest 5% of passenger vehicles travel? (d) The speed limit on this stretch of the I-5 is 70 miles/hour. Approximate what percentage of the passenger vehicles travel above the speed limit on this stretch of the I-5.

The statistical procedure that calculates a linear relationship between two interval/ratio variables is known as _______.

The incomes of math tutors in a tutoring center of a university are normally distributed with a mean of $1100 and a standard deviation of $150 what percentage of tutors earn less than $900 a month

Please answer all thoroughly and clearly Grade 12 Data Management

Approximate the mean for following GFDT. Data Frequency 30 - 34 12 35 - 39 23 40 - 44 10 45 - 49 11 50 - 54 4 55 - 59 7 60 - 64 4 65 - 69 1 70 - 74 1 mean = Report answer accurate to one decimal place.

Which one?

Listed below are pulse rates (beats per minute) from samples of adult males and females. Find the mean and median for each of the two samples and then compare the two sets of results. Does there appear to be a difference? Male: 98 60 59 66 69 73 52 88 63 74 61 84 58 59 52 Female: 83 75 93 94 87 63 94 89 93 79 77 85 74 70 76 ----- Find the means. The mean for males is beats per minute and the mean for females is beats per minute. (Type integers or decimals rounded to one decimal place as needed.)

The full question didn't fit in one part so I attached 2 photos.

SECTION 5.4 13. Normal cattle The Virginia Cooperative Extension reports that the mean weight of yearling Angus steers is 1152 pounds. Sup- pose that weights of all such animals can be described by a Normal model with a standard deviation of 84 pounds. What percent of steers weigh a) over 1250 pounds? b) under 1200 pounds? c) between 1000 and 1100 pounds?

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