A researcher is testing whether a sleep-tracking device improves sleep quality scores. Sleep scores are measured before and after using the device on 1010 individuals. The test is right-tailed, and the significance level is α=0.10α=0.10. What is the critical tt-value, and what is the rejection region?

Critical value =1.383= 1.383Reject H0H_0 if 1.383"\u003et\u003e1.383t\u003e 1.383

Critical value =1.383=1.383Reject H0H_0 if t1.383t

Critical value =−1.383=-1.383Reject H0H_0 if t−1.383t

Critical value =−1.383=-1.383Reject H0H_0 if -1.383"\u003et\u003e−1.383t\u003e-1.383

A researcher is testing whether a sleep-tracking device improves ...

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