A4 Qu v Search Sheet Home Insert Page Layout Formulas Data Review View + Share ^ X Cut Σ AutoSum v Arial 10 A- A- Wrap Text General Сорy ^ • Fill - BI U A % ) .0 .00 .00 .0 Cell Sort & Filter Paste + Merge & Center ▼ Conditional Format Insert Delete Format Format Formatting as Table Styles Clear - V43 fx A B C E F G H J K L M N R S U V W Y 1. Scores on the SAT Mathematics test (SAT-M) are believed to be normally distributed with mean. The scores of a random sample of eight students who recently took the exam. The results are shown in the table 1. Are these data evidence that µ has changed from prior belief (or information) that the average of scores is 600? To determine this, Answer we test the hypotheses Ho: µ = 600, Ha: u + 600 at the 5% significance level (If you want to use R, please use score.csv posted on Canvas). 4 Table 1 Student 1 2 4 6. 7 8 Score 580 620 720 650 690 690 580 670 S n standard error of X bar 3 (a) What is the standard error of a sample mean (x bar)? (Round it to two decimal places) df 1 3 (b) What is a 95% confidenceinterval for u? State the degrees of freedom and t-value clearly. Lower Bound (Limit) Upper Bound (Limit) AN

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.