Mathematics, 05.12.2019 02:31, lilbaby1433
The producers of a new toothpaste claim that it prevents more cavities than other brands of toothpaste. a random sample of 60 people used the new toothpaste for 6 months. the mean number of cavities at their next checkup is 1.5. in the general population, the mean number of cavities at a 6-month checkup is 1.73 (σ = 1.12). a. is this a one- or two-tailed test? b. what are h0 and ha for this study? c. compute zobt. d. what is zcv? e. should h0 be rejected? what should the researcher conclude? f. determine the 95% confidence interval for the population mean, based on the sample mean.
Answers: 1
Mathematics, 21.06.2019 23:10, ineedhelp2285
The input to the function is x and the output is y. write the function such that x can be a vector (use element-by-element operations). a) use the function to calculate y(-1.5) and y(5). b) use the function to make a plot of the function y(x) for -2 ≤ x ≤ 6.
Answers: 1
Mathematics, 22.06.2019 00:00, kklove6700
Which of the following is the maximum value of the equation y=-x^2+2x+5 a. 5 b. 6 c. 2. d. 1
Answers: 1
Mathematics, 22.06.2019 03:30, bandzswagg123
Acone is placed inside a cylinder. the cone has half the radius of the cylinder, but the height of each figure is the same. the cone is tilted at an angle so its peak touches the edge of the cylinder’s base. what is the volume of the space remaining in the cylinder after the cone is placed inside it?
Answers: 1
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