QUESTIONS PLAY
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A lake has a rectangular area roped off where people can swim under a lifeguard's supervision. The swimming section has an area of 2 + 32 - 40 square feet with the long side parallel to the lakeshore.
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a. What are possible dimensions of the roped off area? Use factoring
(x - 5)(x+)
b. How much rope is needed for the three sides that are not along the beach? Provide brief explanation
Amount of rope
Explanation:
The rope used to mark the swimming area is 238 tlong What is when the total length of rope is 238
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02:55
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According to a research study, parents with young children slept 6.4 hours each night last year, on average. a random sample of 18 parents with young children was surveyed and the mean amount of time per night each parent slept was 6.8. this data has a sample standard deviation of 0.9. (assume that the scores are normally distributed.) researchers conduct a one-mean hypothesis at the 5% significance level, to test if the mean amount of time parents with young children sleep per night is greater than the mean amount of time last year. the null and alternative hypotheses are h0: μ=6.4 and ha: μ> 6.4, which is a right-tailed test. the test statistic is determined to be t0=1.89 using the partial t-table below, determine the critical value(s). if there is only one critical value, leave the second answer box blank.