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please show work 1. Find the following: A) Find critical value if: a = .02 ; left - tailed test B) Find critical values if:

please show work
1. Find the following: A) Find critical value if: a = .02 ; left - tailed test B) Find critical values if: a = .01 ; two - tailed test 2. State the null and alternative hypothesis for the following: A) The average age of community college students is 24.6 years. B) The average pulse rate of marathon runners is less than 70 beats per minute

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