Suppose Apple would like to test the hypothesis that the standard deviation for the web browsing battery life of the iPad equals 3.0 hours. The following data represents the battery life, in hours, experienced by a random sample of six users.
10 14 12 16 10 6The sample standard deviation is ________.A) 2.41
B) 2.66
C) 3.19
D) 3.50
Question 2
The No Child Left behind Act of 2001 (NCLB) established standards-based guidelines to determine the effectiveness of public schools. According to a recent study, 45.5 of U.S.
public schools failed to make adequate progress in a recent year as defined by NCLB. A random sample of 67 public schools was selected. The standard error of the proportion is ________.A) 0.0294
B) 0.0322
C) 0.0487
D) 0.0608
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a) Standard PCR machine used for genotyping and (b) agarose gel to detect DNA fragments.
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