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3 years ago

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Tim goes on a car journey. For the first 15 minutes his average speed is 40 mph. He then stops for 25 minutes. He then completes

the journey at an average speed of 45 mph. The total journey time is 1 hour. What is the average speed of the whole journey?

1 answer:

serious [3.7K]3 years ago

3 0

Answer:

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A sampling distribution for samples of size n=49 from a population with means μ=210,000 and standard deviation σ=35,000, has the following means anda standard deviation:

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If X ¯ is the mean sales price of the sample, it will have a mean value of E(X ¯)=210,000.

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