non-vegan vegan 106 126 121 171 141 196 211 231 146 156 196 256 113 131 106 196 a) What is the appropriate test statistic? ---Select--- b) Condition 1: ---Select--- Condition 2: ---Select--- c) Obtain/compute the appropriate values to make a decision about Ho. Critical Value = ; Test Statistic = Decision: ---Select---

The level of dissolved oxygen in a river indicates the water’s ability to support aquatic life. A research project is started to determine if the oxygen levels in the river have changed. A study done 10 years prior, showed that the mean oxygen levels in milligrams per liter for the river was 4.3. A.) Write appropriate hypotheses for this test B.) Water is collected samples from 15 randomly chosen locations along the river and measured the dissolved oxygen. Construct and interpret a 95% confidence interval for the mean dissolved oxygen level for this stream. The results are in milligrams per liter:  4.53 5.5 4.01 5.04 4.83 4.66 3.29 4.4 2.87 5.23 5.42 5.73 4.13 6.38 5.55 C.) Based on the sample from part B, conduct a significance test of these results using a 5% significance level. Give complete results of the test including a p-value and what the results means.

Calculate the Mean Squared Within Treatments (MS Within-Treatments ) value for an independent measures ANOVA with n = 12 observations in each of the three conditions, given SSBetween-Treatments =808 15 and SS Within-Treatments =680.85

Assume that the weights of trout in a river are normally distributed. You randomly catch and weigh 20 such trout. The mean weight from your sample is 7.3 lb with a standard deviation of 0.9 lb. Test the claim that the mean weight of trout in this river is greater than 7 lb at a significance level of 0.01. Be sure to clearly identify your work, using appropriate notation at each step of the process, and summarize your final result in a complete sentence.

The current mean time for a production process is μ = 100 minutes. An engineer has developed a new method for completing the process that they want to show reduces the mean time for the production process i.e. Ho: = 100 H₁: < 100 Suppose that the engineer collects data and analysis leads to rejection of the null hypothesis. What type of decision has been made if in reality the actual mean process time has decreased? O Type-ll error O Type-l error O Correct Decision

The daily milk production of a herd of Guernsey cows has a Normal distribution with mean 73 pounds and standard deviation 15 That is, the milk production is distributed ?(70,13) for these cows. What percent of Guernsey cows have milk production less than 60 pounds? What percent of Guernsey cows have milk production between 60 and 90 pounds? What milk production amount describes the lowest producing 30% of Guernsey cows?

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