Math Test #1 T 5 X A math teacher has started a competition to get students to study for tests. She says that when more than half the class gets an 80 or better AND 95% or more of the class scores 65 or better, they will get pizza for lunch. On the first test, the mean is 75 with a standard deviation of 9. Using the Empirical Rule, does the class get the pizza for lunch? Why or why not? You may use the sketch on the left if needed. 1 1 1 1 1 -20 11 11+20 +30 r Suami​

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Step-by-step explanation:

75

step-by-step explanation:

you do x-29=46 (the number of cantaloupes sold)

in order to find x, you have to find what minus 29 equals 46, meaning you'd have to add 29 to 46.

29+46=75

if you replace x with 75, the equation looks like:

75-29=46

x=75

d. 24+-0.114

step-by-step explanation:

the question requires us to calculate the approximate 95% confidence interval for the mean number of ounces of ketchup per bottle in the sample given the following statistics;

sample mean = 24

standard deviation, σ = 0.4

sample size , n = 49

the confidence interval for a population mean is calculated using the formula;

sample mean ± z-score*(σ/sqrt(n))

the z-score associated with a 95% confidence interval, from the standard normal tables, is;

1.96

substituting these values into the formula;

24 ± 1.96*(0.4/7)

= 24 ± 0.112

from the alternatives given, choice d is closest to the above expression;