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(1 pt) For each statement, select the correct null hypothesis, H 0, and alternative hypothesis, Ha, in symbolic form. (a) The mean height of all...

please help with the following multiple choice answers the questions in picture are not all correct.

a) The -value of a test of a null hypothesis is 


 A. the probability that, assuming the null hypothesis is true, the test statistic will take a value as or more extreme as that actually observed. 

 B. the probability the null hypothesis is true. 

 C. the probability that, assuming the null hypothesis is false, the test statistic will take a value as or more extreme as that actually observed. 

 D. the probability the null hypothesis is false.

(b) In formulating hypotheses for a statistical test of significance, the null hypothesis is often 


 A. a statement of ''no effect'' or ''no difference''. 

 B. the probability of observing the data you actually obtained 

 C. a statement that the data are all 0. 

 D. 0.05

(c) In testing hypotheses, which of the following would be strong evidence against the null hypothesis? 


 A. Using a small level of significance. 

 B. Obtaining data with a large -value. 

 C. Using a large level of significance. 

 D. Obtaining data with a small -value.


(1 pt) For each statement, select the correct null hypothesis, H

Screen Shot 2018-04-04 at 4.39.58 PM.png

Screen Shot 2018-04-04 at 4.39.58 PM.png

(1 pt) For each statement, select the correct null hypothesis, H 0, and alternative hypothesis, Ha, in symbolic form. (a) The mean height of all adult American males is 69 inches (5 ft 9 in). A researcher wonders if young American males between the ages of 18 and 21
tend to be taller than 69 inches. A random sample of 100 young American males ages 18 to 21 yielded a sample mean of 71 inches. “AHot [1:69, Ha:,u#69
’“B.Ho: ,u>69,Ha:pi<69
oc.Ho: ,u= 69, Ha: ”>69
”\D.Ho. ,u: 71 Ha: ”<71
dE.Ho: x=69, Ha: 5r>69
“EH0: x=71, Ha: J_C<71 (b) According to the Merck Veterinary Manual, the average resting heart rate for a certain type of sheep dog is 115 beats per minute (bpm). A Montana
farmer notices his aging sheep dog has been acting more lethargic than usual and wonders if her heart rate is slowing. He measures her heart rate on
15 occasions and finds a sample mean heart rate of 118.2 bpm. “AHo:p=115, Ha:y<115
dB.Ho:JT==115, Ha:i>115
d(:Hg:,u=115, Ha:,u>115
”\D.Ho:5C=118.2, Ha:i;é118.2
“E.:H0 #:1182}! Ha:,u<118.2
OEHO: #:115, H:p¢115 (c) A certain type of hummingbird is known to have an average weight of 4.55 grams. A researcher wonders if hummingbirds (of this same type) living in
the Grand Canyon differ in weight from the population as a whole. The researcher finds a sample of 30 such hummingbirds from the Grand Canyon and
calculates their average weight to be 3.75 grams. OAH0:,u=4.55, Ha:,u<4.55
ij_Ho:JE=3.75, Ha :J'c>3.75
5,0.Ho:,u= 3.,75 Ha :y¢3.75
ij_H0:x=4.55 Ha :JT:<4.55
ij_:H0 ju= 4.,55 Ha :y;£4.55
5EH0: ,u<4.55, Ha :y=4.55

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a) A b) A c) D results from... View the full answer

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