In the June 1986 issue of Consumer Reports, some data on the calorie content of beef hot dogs is given. Here are the numbers of calories in 20 different hot dog brands: 186; 181; 176; 149; 184; 190; 158; 139; 175; 148; 152; 111; 141; 153; 190; 157; 131; 149; 135; 132: Assume that these numbers are the observed values from a random sample of twenty independent normal random variables with mean and variance 2, both unknown. Find a 90% confidence interval for the mean number of calories .

the answer is 844

step-by-step explanation:

it is 844 because if you add 836.50 + 7.5 you will get 844

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step-by-step explanation:

answer: b. f(x) = (x + 2)^3 (x^2 - 7x + 3)^4

step-by-step explanation:

polynomials always have as many roots as their order. this is a 4th order polynomial- hence 4 roots!

complex roots of polynomials always come in pairs. the quadratic equation has the "+/-" in that will alwaysgenerate m+ni amd m-ni, so 7-2i must be a root of this polynomial equation.

the order of the numerator and denominator are both 2. so the horizontal asymptote is y=a2/b2 =7

verticle asymptotes are the forbidden x-values. f(x) becomes undefined at x=-3 because this value will cause a zero denominator.

a graph of r(x) will have vertical asymptotes at ±1 because these values will make the denominator zero. so the domain of the function cannot include ±1.

you 're wlecome! : )

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b, 20 yards

step-by-step explanation: