Birth Weights of Male Babies| Confidence Interval and Hypothesis Testing for Population Mean and Standard Deviation| Statistics

Birth weights of male babies at one hospital were recorded for 200 births of boys. A mean of that sample was  35.3 hg and a standard deviation of 7.2 hg.  a) Construct a 90% confidence interval for the mean of all boy baby weights. b) A medical Journal claims that the mean weight of male babies is 37.0 hg. Test that claim at a 0.10 level of significance.  c) Use a 0.05 level of significance to test a claim that the real standard deviation of boy birth weights is 6.75 hg. 

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Fast food Accuracy| Confidence Interval and Hypothesis Testing for Population Proportion| Statistics

In a recent study of drive-through orders at Burger King, they found out that 365 were accurate and 71 were not accurate. a) Construct a 95% confidence interval for the population percentage of their drive-through order that were not accurate. b) If Burger King claims to have an accuracy of 85% on all drive-through orders, test the claim at the 0.05 levels of significance. 

Openstax Calculus Volume I| Functions and Graphs| Review of Functions | Problem 1

For the following exercises, (a) determine the domain and the range of each relation, and (b) state whether the relation is a function.   x -3 -2 -1 0 1 2 3 y 9 4 1 0 1 4 9 SOLUTION: The domain is $latex \left\{-3,\:-2,\:-1,\:0,\:1,\:2,\:3\right\}&s=1&fg=000000$. The range is $latex \left\{0,\:1,\:4,\:9\right\}&s=1&fg=000000$. Since there is exactly one output for … Continue reading Openstax Calculus Volume I| Functions and Graphs| Review of Functions | Problem 1