Select true or false to tell whether the following disjunctions are true or false. Use the truth table if needed. 5-3 = 15 or 7 + 5 = 20
True
False

9514 1404 393

  False

Step-by-step explanation:

The disjunction evaluates to ...

  false or false

In order for an "or" statement to evaluate to True, at least one of the elements needs to be true. That is not the case here, so the disjunction is false.

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;

0.038

step-by-step explanation: