Question: fTo find out whether a new serum will arrest leukemia, 9 mice, all with an advanced stage of the disease, are selected. Five mice receive

$\fTo find out whether a new serum will arrest leukemia, 9$

mice receive the treatment and 4 do not. Survival times, in years,

from the time the experiment commenced are provided. At the 0.05 level

\fTo find out whether a new serum will arrest leukemia, 9 mice, all with an advanced stage of the disease, are selected. Five mice receive the treatment and 4 do not. Survival times, in years, from the time the experiment commenced are provided. At the 0.05 level of signicance. can the serum be said to be effective? Assume the populations to be normally distributed with equal variances. Click here to view the survival times. Click here to view pgge 1 of the table of critical values of the tdistribution. Click here to view page 2 of the table of critical values of the tdistribution. Let sample 1 be the mice that received treatment and let sample 2 be the mice that did not receive treatment. State the null and alternative hypotheses. H05 H1'P2EIEI H15l11'l-12-IEI Identify the critical region. Select the correct choice below and fill in the answer box(es) to complete your choice. (Round to three decimal places as needed.) Determine the test statistic. no (Round to two decimal places as needed.) State the proper conclusion. H0. There evidence to conclude that the serum El effective

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