How Laude? Many educational institutions award three levels of Latin honors often based on GPA. These are laude (with high praise), magna laude (with great praise), and summa laude (with highest praise). Requirements vary from school to school. Suppose the GPAs at State College are normally distributed with a mean of 2.95 and standard deviation of 0.43.
(a) Suppose State College awards the top 2% of students (based
on GPA) with the summa laude honor. What GPA gets you this
honor? Round your answer to 2 decimal
places.
? GPA or higher
(b) Suppose State College awards the top 10% of students (based on
GPA) with the magna laude honor. What GPA gets you this
honor? Round your answer to 2 decimal
places.
?? GPA or higher
(c) Suppose State College awards the top 20% of students (based on
GPA) with the laude honor. What GPA gets you this honor?
Round your answer to 2 decimal places.
?? GPA or higher
In: Math
1.A pharmaceutical company is testing their new nicotine patch. They randomly assign 100 volunteers to use the patch and finding that 37 had quit smoking after 8 weeks. Compute the 96% confidence interval. You DO need to check CLT here.
2.For # 32 .In the United States, the population mean height for 3-year-old boys is 38 inches. Suppose a random sample of 30 non-U.S. 3-year-old boys showed a sample mean of 37.2 inches with a standard deviation of 3 inches. The boys were independently sampled. Assume that heights are Normally distributed in the population. Determine whether the population mean for non-U.S. boys is significantly different from the U.S. population mean. Use a significance level of 1%. assume that CLT applies.
The pharmaceutical company in #32 repeats their test, this time randomly assigning 125 volunteers to use the patch and finding that 49 had quit smoking after 8 weeks. Compute the 98% confidence interval, and use it to determine if you can support the company’s claim that over half of people on the patch quit smoking after 8 weeks. You do NOT need to check CLT here.
In: Statistics and Probability
Twins Silvia and Lynette are now 6 years old. Time has flown for parents Brett and Brenna. Raising twins is an adventure for sure. While identical in appearance at birth, the twins have always had unique personalities, and now they're developing into their own little people. Silvia, who seemed to grow on air for a good chunk of her toddler years, is now the taller of the two, while Lynette is the one with the smaller appetite at the moment. Both girls have thinned out in the last few years, which Brenna and Brett attribute to their nonstop playing.
1. Silvia begins to put on a little more weight and, about a month later, Lynette follows the same trend. Their bodies are increasing in body fat percentage. It is not drastic, neither parent is alarmed, and they feel it is normal and want to support a healthy body image for both girls. The increase in body fat that occurs around 6 years of age and prepares the body for the changes of adolescence is known as ____________.
a. BMI rebound
b. weight rebound
c. structural maturation
d. adipose restructuring
e. developmental stores
2. Brenna and Brett are amazed at how fast the girls have grown. Since both parents work full time, they feel like sometimes they are not doing enough to provide proper nutrition for the girls. Brenna has the girls drink a cup of milk with dinner to ensure they are at least getting some calcium. However, a cup of milk has only about 300 mg of calcium, which Brenna feels is below the recommendation. What is the recommendation of dietary calcium per day?
a. 100 mg/day
b. 1000 mg/day
c. 1300 mg/day
d. 10 mg/day
3. Brenna comes home after a long shift at work. Not only did she have an employee quit unexpectedly, she also had to deal with stressors from her boss wanting her to get ahead of another project. At home, she walks in the front door to yet another unforeseen stressor: the girls run up to her asking to go out to lunch. Brett informs Brenna that the girls have seen multiple commercials for pizza and now are dying to go out and eat pizza.
True or False: Advertisements to children can have an impact on food preference.
a. True
b. False
4. At first, Brenna and Brett were happy to see that the girls had gained weight to be within a healthy weight range. Over the past year, however, they have noticed that the girls have been especially picky in foods that they will eat, mostly gravitating towards fast foods and processed foods.
True or False: Based on their recent weight gain, Sylvia and Lynette are exceeding total calories, which is common for children ages 6 to 11.
a. True
b. False
5. Oh no! Lynette has proven the statistic that one in two children ages 6 to 9 will develop dental decay in their primary or permanent teeth. She has a cavity at their latest dental appointment that requires a filling. Fortunately, it's not in a permanent tooth. What can Brett and Brenna do to help ensure that neither of the girls get any more cavities?
a. Brush teeth immediately after having gummy or sticky foods.
b. Choose snacks that are a combination of carbohydrates, proteins, and fats.
c. Have regular meal and snacks times instead of continual snacking throughout the day.
d. Rinse or brush teeth after eating.
e. All of these are correct.
6. While neither parent is worried about the girls' recent weight gains, they are being mindful to watch for any signs that the girls are gaining too much weight. While healthy food is the norm in their household, the girls are in control of their own intake while eating out, such as at school events and at their grandparents' house.
True or False: Beyond consumption of healthy and unhealthy foods, the American Academy of Pediatrics recommends that children have no more than 2 hours of screen time daily to reduce their amount of sedentary time.
a. True b. False
In: Nursing
It was found that in a sample of 90 teenage boys, 70% of them have received speeding tickets. What is the 90% confidence interval of the true proportion of teenage boys who have received speeding tickets
Given the above information, how many boys must be sampled to be within 2% of true proportion in a 90% confidence interval?
If no information is given for the proportion, how many boys must be sampled?
In: Statistics and Probability
Explain why the Neoclassical school of thought is considered the birth of a new school of economic thought and what is new compared to the classical school?
In: Economics
Pick the best choice
A researcher examined if a new prep-course has an effect on the final exammm scores among BCX students. He selected 20 BCX students and ask them to complete the prep-course for three weeks before the final exammm. After analyzing the sample data, the one-sample t-statistics was 2.08. With α = .05, the two-tailed test, what can he conclude?
*Failed to reject the null hypothesis and conclude that the
new-prep course has no effect.
*Reject the null hypothesis and conclude that the prep-course had
an effect.
*Reject the null hypothesis and conclude that the new-prep course
has no effect.
*Failed to reject the null hypothesis and conclude that the
new-prep course has an effect.
A researcher compared a sample of XDS students (n = 8) and a sample of XDS students (n = 10) on the GPA. After computing the difference between the two groups, he found t= 1.75.
-Reject the null hypothesis, and there is no difference between
two groups on the GPA.
-Failed to reject the null hypothesis, and there is no difference
between two groups on the GPA.
-Reject the null hypothesis, and there is a difference between two
groups on the GPA.
-Failed to reject the null hypothesis, and there is a difference
between two groups on the GPA.
Which of the following research situations would be most likely
to use an independent-measures design?
*Examine the long-term effectiveness of a stop-smoking treatment by
interviewing subjects 2 months and 6 months after the treatment
ends.
*Compare the blood-pressure readings before medication and after
medication for a group a patients with high blood pressure.
*Compare the mathematics skills for 9th-grade boys versus 9th-grade
girls.
*Examine the development of vocabulary as a group of children
mature from age 2 to age 3.
Which of the following research situations is most likely to use
an independent design?
*Evaluate the effectiveness of a pain reliever by measuring how
much pain is reduced after taking the medication.
*Evaluate the difference in self-esteem between student athletes
and non-athletes
*Evaluate the developmental change of verbal skills as a sample of
30 girls matures from age 2 to age 3.
*Evaluate the effectiveness of a cholesterol medication by
comparing cholesterol levels before and after the medication.
When n is small (less than 30), how does the shape of the t distribution compare to the normal distribution?
-It is perfectly normal.
-It is flatter and more spread out than the normal
distribution.
-It is taller and narrower than the normal distribution.
-None of the options
In: Statistics and Probability
1. Describe how the American system of federalism experienced important transformations during the 1970s, 1980s, and 1990s.
(Describe these changes by discussing “New Federalism,” devolution, and the Supreme Court’s rulings on federalism.)
2. How did the developments of this period differ from the previous eras of American federalism?
In: Economics
In: Nursing
In: Economics
In: Accounting