A population has a standard deviation of 50. A random sample of 100 items from this population is selected. The sample mean is determined to be 600. At 95% confidence, the margin of error is А. 8.3 В. 9.92 С. 9.8 D. 8.225

Heights​ (cm) and weights​ (kg) are measured for 100 randomly selected adult​ males, and range from heights of 133 to 188 cm and weights of 40 to 150 kg. Let the predictor variable x be the first variable given. The 100 paired measurements yield x=167.80 ​cm, y=81.36 ​kg, r=0.286​, ​P-value=0.004​, and y=−108+1.19x. Find the best predicted value of y ​(weight) given an adult male who is 138 cm tall. Use a 0.10 significance level.

A sample of ?=14n=14 observations is drawn from a normal population with ?=1030μ=1030 and ?=200σ=200. Find each of the following: A. ?(?¯>1110)P(X¯>1110) Probability =  B. ?(?¯<944)P(X¯<944) Probability =  C. ?(?¯>997)P(X¯>997) Probability =

suppose that 43% of people who enter a store will make a purchase. Random samples of people who walk into a particular store is studied, and the proportion of those who made a purchase is found for each sample. Assume that all the samples were the same size. If 29.46% of all sample proportions are less than 0.3274. What was the z-score for 0.3274? What is σp′?

Stoaches are fictional creatures, sometimes mistaken for mome raths. Suppose a two-tailed t-test is conducted to test for a difference between the population means of adult female stoach weights and adult male stoach weights. The female sample has 13 weights, and the male sample has 7 weights. The t-statistic for the test is -0.20542. What is the p-value? (Give your answer to 4 decimal places.) p-value:

How would I find the answer with my TI-84?I have no idea what to do after getting P(Z< -1.55).....? Mean is 11.1Standard Deviation: 4.5n = 40I got so far: 10-11.1 = -1.1 / 4.5 divided by the square root of 40so around : -1.55

Heights​ (cm) and weights​ (kg) are measured for 100 randomly selected adult​ males, and range from heights of 133133 to 190190 cm and weights of 3737 to 150150 kg. Let the predictor variable x be the first variable given. The 100 paired measurements yield x overbarxequals=168.08168.08 ​cm, y overbaryequals=81.5781.57 ​kg, requals=0.3130.313​, ​P-valueequals=0.0020.002​, and ModifyingAbove y with caretyequals=negative 108−108plus+1.121.12x. Find the best predicted value of ModifyingAbove y with carety ​(weight) given an adult male who is 169169 cm tall. Use a 0.050.05 significance level.   The best predicted value of ModifyingAbove y with carety for an adult male who is 169169 cm tall is (answer)  kg. ​(Round to two decimal places as​ needed.)

Choose the letter of the correct answer

Heights​ (cm) and weights​ (kg) are measured for 100 randomly selected adult​ males, and range from heights of 131131 to 194194 cm and weights of 4141 to 150150 kg. Let the predictor variable x be the first variable given. The 100 paired measurements yield x overbarxequals=167.50167.50 ​cm, y overbaryequals=81.4381.43 ​kg, requals=0.4180.418​, ​P-valueequals=0.0000.000​, and ModifyingAbove y with caretyequals=negative 105−105plus+1.191.19x. Find the best predicted value of ModifyingAbove y with carety ​(weight) given an adult male who is 150150 cm tall. Use a 0.100.10 significance level. The best predicted value of ModifyingAbove y with carety for an adult male who is 150150 cm tall is nothing kg. ​(Round to two decimal places as​ needed.)