Answer Happy

Is there sufficient evidence at the 0.05 level of significancethat the average monthly charge has​ increased?
Determine the null​ hypothesis, H0​, and the alternative​hypothesis, H1?
Compute the test statistic?
Using a level of significance of​ 0.05, what is the critical​value?
Find the​ p-value for the test?
What is your​ conclusion?
A bank found that in recent years, the average monthly charge on its credit card was $1,450. With an improving economy, they suspect that this amount has increased. A sample of 45 customers resulted in an average monthly charge of $1,476.07 with a standard deviation of $182.93. Do these data provide statistical evidence that the average monthly charge has increased? Formulate the appropriate hypothesis test and draw a conclusion. Use a level of significance of 0.05.