Mary conducted a study to investigate whether first year science students were more likely than University students in general to use laptops (or tablets) to take notes in lectures. Within the population of university students only 20% reported that they used laptops or tablets to take notes in lectures. A random sample of 40 first year science students was selected and it was found that 14 students reported using laptops or tablets to take notes in lectures.Mary assumed first year science students were no different from University students in general with regards to their use of laptops (tablets) in lectures.   She then used a normal approximation to determine the probability of observing 14 or more students, out of 40, using laptops (tablets). Which one of the following statements is false?   If she didn't use a continuity correction her probability will be an underestimate of the exact probability  If she did use a continuity correction her probability will still be an underestimate of the exact probability   Assuming Mary's model is correct, the exact probability of observing 14 students  using a laptop or tablet to take notes in lectures is 0.0115  If Mary repeated this study many times then approxiately 14 times out of 1000  she should expect to observe 14 or more first year science students using a laptop or tablet (to take notes in lectures).   Based on evidence form Mary's sample,  first year science students seem to be more likley to use laptops (tablets) in lectures than the university students in general.Revise the end of chapter 4 - normal approximation to the Binomial. Also have a play with the applet to help clarify. If you find this really difficult to do intuitively, then you can just calculate the exact and approximate probabilities using Minitab. Question 91 / 1 ptsWhich one of the following  is likely to be well described by a Binomial model?  The number of accidents in a large factory during one 8-hour shift   The number of spades in a bridge hand (ie a random selection of 13 cards from a pack of 52 cards)   The number of tosses of a fair coin until the 10th head is obtained   The number of years between floods at a certain location   The number of apples that are 'infected' in a sample of 40 apples randomly selected from a large consignment of apples.

Which kind of study can be used to gather information about how the study habits of your classmates  affect their final exam grades?observational studysurveysingle-blind experimentdouble-blind experimentsimple random sample

What is the appropriate alternative hypothesis if a certain senior high school, a study found that 972 out that 1,100 Grade 12 students use smartphones. Using α = 0.10 level, is there enough evidence to conclude that the percentage of students who are using smartphones is different from 25%? Ha: p > 0.25Ha: p < 0.25Ha: p =0.25Ha: p ≠ 0.2

What was one of the lessons in this activity? Using mnemonic devices can help me remember important information. If my instructor uses PowerPoint slides, it’s best to focus on listening to the lecture in class rather than taking notes. Multitasking while studying can make studying more pleasant and effective. It’s better to type notes rather than handwrite them because I can store my notes in the cloud.

It is believed that 11% of all Americans are left-handed. A college needs to know how many left-handed desks to place in the big lecture halls being constructed on its campus. In a random sample of 370 students from that college, whether or not a student was left-handed was recorded for each student. The college wants to know if the data provide enough evidence to show that students at this college have a different percentage of left-handers than the general American population? State the random variable, population parameter, and hypotheses. State the Type I and Type II errors in the context of this problem.a) The symbol for the random variable involved in this problem is Incorrect

It is believed that 11% of all Americans are left-handed. A college needs to know how many left-handed desks to place in the big lecture halls being constructed on its campus. In a random sample of 370 students from that college, whether or not a student was left-handed was recorded for each student. The college wants to know if the data provide enough evidence to show that students at this college have a different percentage of left-handers than the general American population? State the random variable, population parameter, and hypotheses. State the Type I and Type II errors in the context of this problem.a) The symbol for the random variable involved in this problem is     The wording for the random variable in context is as follows: b) The symbol for the parameter involved in this problem is     The wording for the parameter in context is as follows: c) Fill in the correct null and alternative hypotheses:    𝐻0: 𝐻𝐴: d) A Type I error in the context of this problem would be:    e) A Type II error in the context of this problem would be: