Little help a negative times a negative is always a positive so the answer is 24 and another hint is a negative times a positive is a negative
It would be x the 3 would cross out to leave x
5/8+2/5 is 1 1/40 and 9/10-1/3 is 17/30
Answer:
The 95% confidence interval is
Step-by-step explanation:
From the question we are told that
The sample size is
The sample mean is
The standard deviation is
Given that the confidence level is 95% then the level of significance is mathematically represented as
Next we obtain the critical value of from the normal distribution table, the value is
Generally the margin of error is mathematically evaluated as
=>
=>
The 95% confidence interval is mathematically represented as
substituting values