A Group Of Researchers On Sable Island Are Wondering Whether The Grey Seals Pups On The West Side Of The Island Grow At 1 (154.29 KiB) Viewed 97 times
A group of researchers on Sable Island are wondering whether the grey seals pups on the west side of the island grow at different rates than those on the east side of the island. To test this they measured the weight of 25 one week old grey seal pups on the west side of the Island and 21 one week old grey pups on the east side of the island. Their data is given in the provided CSV file. If you can't use the button to download the CSV file for any reason, the data is given In a table at the bottom of this page. The researchers assume that the population variance of weight for one week old pups is the same on both the east and west sides of the Island. Download osv Which of the following is the correct null and alternative hypotheses? Let p₁ be the average weight of one week old grey seal pups on the west side of the island and p₂ to be the average weight of one week old grey seal pups the east side of the island. O Ho: H1 Ho: H1 Ho: H1 H2 and He: H1 H2 H2 and Hai >> H2 and He: H1 42 05 - 01 and Hat כוו ווו O H [1 pt(s)] Submit Answer Tries 0/1 What is the correct distribution for the test statistic? OF distribution O2 distribution O Tails distribution Ot distribution [1 pt(s)] Submil Answer Tries 0/1 What is the mean weight for seals on the west side of the island? [1 pt(s)] Submit Answer Tries 0/3 What is the standard deviation for seals on the west side of the island? [1 pt(s)] Submit Answer Tries 0/3 What is the pooled standard deviation of the two samples? [1 pt(s)] 0/3 What are the degrees of freedom of the test statistic? [1 pt(s)]
what are the degrees of freedom of the test statistic? [1 pt(s)] Submit Answer Tries 0/3 Calculate the test statistic [1 pt(s)] Submit Answer Tries 0/3 Do we reject the null hypothesis at significance level a = 0.1? West East 32.8 37.3 28.2 33.5 25.9 27.0 26.3 31.1 22.3 34.6 37.6 27.1 21.8 32.1 30.2 26.4 29.4 36.0 34.6 26.9 33.3 32.5 29.8 34.6 26.0 33.4 34.2 33.3 29.2 25.4 33.5 39.6 28.6 35.0 32.5 34.1 30.3 24.7 31.1 35.9 34.8 29.9 27.5 28.5 29.1 38.8 O Yes, we reject the null hypothesis O No, we fail to reject the null hypothesis [1 pt(s)] Submit Answer Tries 0/1 Copy of data in CSV file:
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