An investor has an account with stock from two different companies. Last year, her stock in Company A was worth $1250 and her stock in Company B was worth $4050. The stock in Company A has decreased 10% since last year and the stock in Company B has decreased 4%. What was the total percentage decrease in the investor's stock account? Round your answer to the nearest tenth (if necessary).

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;

d.) yes, because the volume of the cone is greater than the volume of the sphere

step-by-step explanation: