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What is the value of z (critical 2 points State the null and alternative 2 points What is the value of z (critical 2 points value) if the confidence level is hypotheses in words. * value) if the confidence level is 90% 2 tailed? * 79% 1-tailed? * The net weight of a packet of a snack brand is 130g. A sample of 80 packs yielded a sample mean of 112g with a standard deviation of 15g. Z = +2.575 Z = +2.575 ",: The sample comes from a popul ot equal to 1324. O A . O A. O A Z = $1.645 Z = $1.645 Hot The sample comes from a population whose sample mean is not equal to 112g. ,: The sample comes from a population whose sample mean is 1125. O B. O B O B. Z = +1.96 W/: The sample comes from s population whose sample mean is not equal Z = +1.96 O c. O c O c. Z = 12.33 Z = 12.33 Hot The sample comes from a population whose sample mean is not equal to 130g 1,: The sample comes from a population whose sample mean is 130g. O D. O D. It is a decision making process 2p for evaluating claims about a Determine whether the test is 2 points population based on the Words like decrease, less than, 2 points two-tailed or one-tailed. "A characteristics of sample smaller and the like suggest a musician believes that purportedly coming from that directio listening to classical music population. * n.* affects mood."* A. Null Hypothesis A. directional A. One-tailed B. Hypothesis Testing B. non-directional O B. two tailed C. Alternative Hypothesis O C. right-tailed O D. hypothesis Parameter D. left-tailedState the null and alternative 2 points What is the value of z (critical 2 points Determine whether the test is 2 points hypotheses in symbol. * value) if the confidence level is two-tailed or one-tailed. "A 99% 2 tailed? * storekeeper thinks that time The net weight of a packet of a snack brand is 130g. A sample of 80 packs of day influences sale of ice yielded a sample mean of 112g with a standard deviation of 15g. cream." * A. One-tailed B. two tailed Ho: X #112g Z = +2.575 H: X =112g Determine whether the test is 2 points two-tailed or one-tailed. "A nutritionist claims that her O A . developed bread is fortified with vitamin B." * O A A. One-tailed B. two tailed Z = +1.645 Ho: X = 112g H1 : X # 112g Words like greater than, 2 points O B. efficient, improves, effective, increase and so on suggest a O B direction. * ! A. directional B. non-directional C. right-tailed Ho: X = 130g Z = +1.96 O D. left-tailed H: X # 130g What type of error is 2 points committed when you reject O c O c. the null hypothesis when it is actually true. * A. Type I error B. Type II error Ho: X # 130g Z = 12.33 C. Type Ill error H1: X =130g D. Type IV error O D. OD What type of error is 2 points committed when you do not reject the null hypothesis when it is actually false. * A. Type I error B. Type II error pt. stat C. Type Ill error D. Type IV errorWhat is the value of 2 (critical value) if the condence level is 95% 2 tailed? * z = 1-2575 '0 A. z = i1.645 O B. z = i196 z = i233 OD. What type of error is 2 points 2 points What is the value of 2 (critical 2 palms value) if the confidence level is 95%1-tailed? * z = i2.575 o A. z = i1.645 n O B' U 9 z = i196 o c. z = i233 o D
