Mathematics, 30.07.2021 01:20 faithabossard
A consulting firm claimed that 65% of all e-commerce shoppers fail in their attempts to purchase merchandise on-line because Web sites are too complex. The claim was tested by taking a random sample of 60 online shoppers and assigning them each a different randomly selected e-commerce Web site to test. 45 reported sufficient frustration with their sites to deter making a purchase. The data was entered into STATISTIX and the following output was generated:
Hypothesis Test - One Proportion
Sample Size 60
Successes 45
Proportion 0.75000
Null Hypothesis: P= 0.065
Alternative Hypothesis: P > 06.5
Difference 0.10000
Standard error 0.05590
Z(uncorrected) 1.62 P 0.0522
Method 95% cofidence interval
What assumption is necessary for this analysis to work properly?
a. Neither of these assumptions is necessary as the sample size is considered large.
b. The sample that we are sampling from needs to be approximately normally distributed.
c. The population that we are sampling from needs to be approximately normally distributed.
Simple Asymptotic (0.640403, 0.8597)
Answers: 3
Mathematics, 22.06.2019 03:20, achsahjosey
Zed is making a centerpiece for his dining room table by putting sand in a cube-shaped vase. the vase is 0.25 meters in length, width, and height. he bought 25 kg of sand. assume the density of dry sand is 1,602 kgm3. what is the volume of the sand that zed purchased? the volume of the sand is approximately m3. enter your answer as the number that correctly fills in the blank in the previous sentence. if necessary, round your answer to six decimal places, like so: 42.536475
Answers: 1
Mathematics, 22.06.2019 04:10, dilibngalmira
What is the length of side s of the square shown below?
Answers: 3
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