SUBSTITUTION HELP just 4.g) r=-3.2p+q^2
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Answer:
For the restaurant that charges 95 cents, the z-score is -4.29.
For the restaurant that charges $1, the z-score is -3.57.
For the restaurant that charges $1.35, the z-score is 1.43
Step-by-step explanation:
Z-score:
In a set with mean and standard deviation
, the z-score of a measure X is given by:
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.
The average cost of a glass of iced tea is $1.25 with a standard deviation of 7c.
This means that
Restaurant that charges 95 cents:
The z-score is found when X = 0.95. So
For the restaurant that charges 95 cents, the z-score is -4.29.
Restaurant that charges $1:.
X = 1
For the restaurant that charges $1, the z-score is -3.57.
Restaurant that charges $1.35:
X = 1.35
For the restaurant that charges $1.35, the z-score is 1.43
Answer:
The best predicted calorie count for a cereal with a measured sugar amount of 0.40 g is 3.864
Step-by-step explanation:
Consider the provided information.
he linear correlation coefficient is r= 0.765 and the regression equation is
The mean of the 16 amounts of sugar is 0.295 grams and the mean of the 16 calorie counts is 3.76.We need to find the best predicted calorie count for a cereal with a measured sugar amount of 0.40 g
Substitute x = 0.40 in the given equation.
Hence, the best predicted calorie count for a cereal with a measured sugar amount of 0.40 g is 3.864