Betty earns $52.65 per week working as a lifeguard. She worked as a lifeguard for 5 weeks. She also earned $46.25 painting faces at a carnival. She spent $16.25 of her total earnings to buy a book. Betty put 1 over 6 of the remaining money in her savings account. Betty used the following steps to find the total money she put in her saving account:

Step 1: [($52.65 ⋅ 5) + $46.25 − $16.25] ⋅ 1 over 6

Step 2: [$263.25 + $46.25 − $16.25] ⋅ 1 over 6

Step 3: 293.25 ⋅ 1 over 6

Step 4: $1,759.50

In which step did Betty first make an error? Use words to explain how Betty can correct her error.

differnt varibles efect the range

step-by-step explanation:

the probability that a bird is green (.30) is true

step-by-step explanation:

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;