Question

Hospital emergency rooms (ERs) have a bad reputation for long wait times. To improve their image, many hospitals have worked hard to reduce their ER wait times and frequently advertise their improved, low ER wait times. Cleveland Clinic Martain Health recently advertised a 29 minute or less wait time at their ER. An accreditation agency is suspicious of this low advertised wait time and would like to test the hospital's claim. A random sample of 129 ER visits to Cleveland Clinic Martain Health was examined and the mean wait time of the sample was found to be 29.35 minutes. Using a significance level of 5%, can the accreditation agency conclude that the hospital's claim about ER wait times is false? Assume that the standard deviation of the wait times of all ER visits at Cleveland Clinic Martain Health is known to be 3.79 minutes. Use the critical value method. State the null and alternative hypothesis for this test. $H_0$: ? $H_1$: ? Determine if this test is left-tailed, right-tailed, or two-tailed. Oleft-tailed O two-tailed O right-tailed Should the standard normal ($z$) distribution or Student's ($t$) distribution be used for this test? The standard normal ($z$) distribution should be used The Student's $t$ distribution should be used Determine the critical value(s) for this hypothesis test. Round the solution(s) to two decimal places. If more than one critical value exists, enter the solutions using a comma-separated list.

          Hospital emergency rooms (ERs) have a bad reputation for long wait times. To improve their image, many hospitals have worked hard to reduce their ER wait times and frequently advertise their improved, low ER wait times.
Cleveland Clinic Martain Health recently advertised a 29 minute or less wait time at their ER. An accreditation agency is suspicious of this low advertised wait time and would like to test the hospital's claim.
A random sample of 129 ER visits to Cleveland Clinic Martain Health was examined and the mean wait time of the sample was found to be 29.35 minutes.
Using a significance level of 5%, can the accreditation agency conclude that the hospital's claim about ER wait times is false? Assume that the standard deviation of the wait times of all ER visits at Cleveland Clinic Martain Health is known to be 3.79 minutes. Use the critical value method.
State the null and alternative hypothesis for this test.
$H_0$: ?
$H_1$: ?
Determine if this test is left-tailed, right-tailed, or two-tailed.
Oleft-tailed
O two-tailed
O right-tailed
Should the standard normal ($z$) distribution or Student's ($t$) distribution be used for this test?
The standard normal ($z$) distribution should be used
The Student's $t$ distribution should be used
Determine the critical value(s) for this hypothesis test. Round the solution(s) to two decimal places. If more than one critical value exists, enter the solutions using a comma-separated list.

hospital emergency rooms ers have a bad reputation for long wait times to improve their image many hospitals have worked hard to reduce their er wait times and frequently advertise their imp 48225

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