u increase the confidence level, what do you expect will be true ut the new confidence interval? Select all that are true. It will be narrower (smaller distance between the lower and upper bounds). It will be centered around the same mean value. It will be centered around a larger mean value. It will not change. It will be centered around a smaller mean value. It will be wider (larger distance between lower and upper bounds).

The second box options are so not reject & reject the third box options are is not and is. Pls help i need in an hour Thankyou.

A physical fitness trainer has several workouts she developed for increasing female upper body strength. All the workout plans are created based on the average adult women’s bench press ability.  The average adult woman can bench 115 lbs. with a standard deviation of 18 pounds.  The trainer has a class of 14 females and does an initial test to see if the women are representative of the average female population.                         Data    Female Class     Bench Ability (lbs.) 1 130 2 100 3 99 4 114 5 130 6 97 7 114 8 135 9 128 10 128 11 116 12 141 13 113 14 116 Write the null and alternative hypothesis in statistical form: Determine the mean for the sample: Apply the z-test formula Zobt = Is this a one-tailed (directional test) or a two-tailed (non-directional test)?   What is your alpha level set to?   α =  Label the critical value(s) and indicate the position of the Zobt on the distribution…

Please do not give solution in image format thanku The population distribution of scores on a commonly used IQ test is normal with a mean of 100 and a standard deviation of 15. The test was recently administered to a sample of psychology undergraduates and to a sample of mildly depressed psychiatric patients. Both groups yielded normally distributed IQ scores. The standard deviation of the students' scores was 12 and that of the patients' was 17. The probability that a psychology student has a lower IQ than the average person in the population was found to be 10 percent. The probability that a patient has a higher IQ than the average psychology student is 5 percent.   a) What is the probability that a randomly selected psychology student will have a lower IQ than the average psychiatric patient?   b) What percentage of people from the general population will have a higher IQ than a student at the 67th percentile of the psychology student distribution?