9. You are interested in retrieving a souvenir from a shipwreck located 115 feet below the water. You do not have diving equipment, so your dive is limited by the equation
y = 0.05x2 - 4x - 38 Assuming you can hold your breath for the duration of the dive; will
you be able to retrieve your souvenir?
а.
No, you can only go 38 feet below the water level.
b. No, the shipwreck is located 4 feet below your maximum depth.
c. Yes, you will be able to retrieve the souvenir.
d. No, you are too afraid of sharks to even attempt.

answer: 0,6

step-by-step explanation:

this would make it the y intercept.

or

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;

answer

step-by-step explanation: