A student wants to determine if there is a difference in the pricing between two stores for health and beauty supplies. She recorded prices from both stores for each of 10 different products. Assuming that the conditions for conducting the test are satisfied, determine if there is a price difference between the two stores. Use the a = 0.01 level of significance. Complete parts (a) through (d) below. A B C D E F G H J Store 5.95 7.41 3.79 1.77 1.76 2.86 4.75 3.19 2.91 3.73 1 Store 5.99 7.99 3.98 1.77 1.98 2.42 4.76 3.71 2.94 3.65 (a) What type of test should be used? Choose the correct answer below. O A. A hypothesis test regarding the difference of two means using a matched-pairs design. OB. A hypothesis test regarding the difference between two population proportions from independent samples. OC. A hypothesis test regarding the difference of two means using Welch's approximate t. O D. A hypothesis test regarding two population standard deviations.

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Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.