1. college mathematics instructors suggest that students spend 2 hours outside of class studying for every each week. the gi o, for a 4 credit math class students should spend at least 8 hours (480 minutes) studying ok. the given data represent the time spent on task recorded on mymathlab (in minutes) for randomly selected students during the third week of the semester. determine if the evidence suggests that udents are studying less than 480 minutes per week. use a 0.05 level of significance and report an appropriate confidence interval for the population parameter.

10/60

step-by-step explanation:

if you divide 10 by 60 the answer is 0.166666 while if you divide or solve the other problems it equals 0.6

no he doesnt because "-16' is negatiive

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;

step-by-step explanation: the answer is 27. first multiply .32 by 25 which equals 8. then add 8 to 25 which gives you 33. then you subtract that from 6 since she gave 6 to her brother.

,, add !