Describe the differences between a probability sample and a nonprobability sample

Question 1. The Web site for M&M™ candies claimed that 24% of plain M&M candies are blue, 20% are orange, 16% green, 14% yellow, and 13% each red and brown. (a) Pick one M&M at random from a package. 1. Describe the sample space. 2. What is the probability that the one you pick is blue or red? 3. What is the probability that the one you pick is not green? (b) You pick three M&M's in a row randomly from three separate packages. 1. Describe the sample space for the outcomes of your three choices. 2. What is the probability that every M&M is blue? 3. What is the probability that the third M&M is red? 4. What is the probability that at least one is blue?

Suppose a random sample of 824 athletes from the college are asked what their major is. The table below shows the results of the survey. Observed Frequencies of Majors from the Sample Outcome Observed Frequency Math/Science 185 Arts & Humanities 206 Business & Economics 264 Other 169 The distribution of majors at the college is shown in the second column of the table below.   Fill in the expected frequencies.  (Round to the nearest whole number). Frequencies of Majors at the College Outcome Expected Percent Expected Frequency Math/Science 24   Arts & Humanities 22   Business & Economics 21   Other 33

Dr. Summit wants to compare the ability to recall events between older adults and younger adults. What is the appropriate test statistic for each scenario? a. One sample Z-test b. One sample t-test c. two related samples t-test d. two independent samples t-test

I’m taking a probability and a statistics class. Please get this correct so I can study.

Which of the following is a form of systematic error?     Chance.     Type 2 error.     Bias caused by the way people volunteer for a study.     Type 1 error.

Please check picture and answer with detail explaination.

Week 10. Question 6 In a research report, suppose a researcher states that they ‘randomly’ stopped passers-by in a shopping centre to get responses for their survey. Explain why this process is not truly random.

The students in an Introductory Statistics class are asked to complete a survey about study habits. (a) does the study appear to use random sampling? yes or no (b) does the study appear to use random assignment? yes or no

Please help with question 11 with explanation Thank you