z-test 7. We will now directly test the hypothesis that the mean weight of Population #2 is the same as Population #1. U

Post by **answerhappygod** » Wed May 11, 2022 7:45 pm

: Z Test 7 We Will Now Directly Test The Hypothesis That The Mean Weight Of Population 2 Is The Same As Population 1 U 1 (64.34 KiB) Viewed 26 times

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z-test 7. We will now directly test the hypothesis that the mean weight of Population #2 is the same as Population #1. Using a confidence level of 99% (a = 0.01) and the population SD (o) of Population #1, are we very confident that the mean weight of Population #2 is the same as Population #1 (H)? X - Ho olun t-test 8. Using a confidence level of 95% (a = 0.05) and the sample SD (s) of Population #2. are we very confident that the mean weight of Population #2 is the same as Population #1 (H)2 хто

Confidence intervals (20 points/10 each 6. Another population of beaver were sampled in South Carolina (Population #2). Biologists did not have the time no money to collect a large number, so they randomly captured 22 beaver from several counties. They calculated a mean weight of x = 34.2 with a sample 50 of s = 11.8. a) Determine a 90% Cl for Population #2 mean welght and assume a population SD (o) of 9.5 lbs. (the same as Population #1). o x2 2-2805 l sud Jn LL = x - 2x - 30.87 lbs un UL = X+Z+%287.65lbs (30.071 37.5311 b) Determine a 95% CI for Population #2 mean weight without assuming you have a population 5D available (use sample SD,

xt t=t0025,21 =2.0796 LL=8-2x = 28.97165 UL>tzn n = 34.43155 =8+in (28.97634.431) c) Based on this data, are the mean weights for the 2 populations statistically the same (does us for Population #1 fall within either of the cl's]? (4 bonus points) The population means for both populationtelone Population #2 Pulls within booncis .

7. We will now directly test the hypothesis that the mean weight of Population #2 is the same as Population #1. Using a confidence level of 99% (a =0.01) and the population SD (o) of Population #1, are we very confident that the mean weight of Population #2 is the same as Population #1 (u)? x - Llo olun -test 8. Using a confidence level of 95% (a = 0.05) and the sample SD ($) of Population #2 are we very confident that the mean weight of Population #2 is the same as Population 1 (H) хто 1 s/n