Find the expected value.
Q: Any Boston Celtics fan or archrival knows that Shaquille O’Neal, one of the NBA’s most dominant…
A: Given: Sample size (n) = 39 Number of success (x) = 26 α= 0.05 Here, the test is to be conducted…
Q: d) Shelly believes that more than half of the students at the university are in favour of the…
A: Hypothesis test are used to measure the significance between the sample and population. The z test…
Q: How many students should she survey to be 95% confident she is within 3% of the true population…
A: Given that Margin of error, E = 3% = 0.03 Confidence level = 95% The critical value of Z at 95%…
Q: A basketball team is down by 2 points with only a few seconds remaining in the game. There is a 50%…
A: In statistics, chance shows how likely something will happen.
Q: In an avocado exporting country there is an undesirable disease in avocados. He decides to take a…
A: From the provided information, Sample size (n) = 1000 From which 204 were infected avocados.…
Q: An executive believes that a new energy drink his company developed will increase an individual's…
A: Paired t-test statistic results:For testing whether the new energy drink increase an individual’s…
Q: (a) To construct a serial correlation, we use data pairs (x, y) where x = original data and y =…
A: (a) Let x is defined as the original data, and y is defined as original data shifted ahead by one…
Q: Loras Tyrell was curious to see if his students actually saved money by purchasing books from…
A: From the given output : Population Mean,μ = 12.75 Population Standard Deviation,σ =…
Q: a population proportion
A: A statistics professor claims that her lectures cause headaches in only 1% of those who listen to…
Q: upus is a medical phenomenon where antibodies that are supposed to attack foreign cells to prevent…
A:
Q: What is the error in the sum of the 400 coins.
A: Suppose you are the master of the mint. If you sample 400 coins and the king has set the error…
Q: A couple plans to have 4 children. List the different outcomes according to the gender of each…
A: The objective of the question is to list all the possible outcomes of having 4 children, considering…
Q: One common system for computing a grade point average (GPA) assigns 4 points to an A, 3 points to…
A: Given , assigns 4 points to an A, 3 points to a B, 2 points to a C, 1 point to a D, and 0 points…
Q: Shanice is a star player for her women's basketball team. She has injured her ankle, and it is…
A: Given, If Shanice can play, the coach estimates that the team a score of 91 points. If Shanice is…
Q: AN OUTDOOR HOT DOG VENDOR SELLS AN AVERAGE OF 60 HOT DOGS PER DAY IN DRY WEATHER AND AN AVERAGE OF…
A: The outdoor hot dog vendor sells an average of 60 hot dogs per day in dry weather and an average of…
Q: Lupus is a medical phenomenon where antibodies that are supposed to attack foreign cells to prevent…
A: Given : P(A) = P(person has a disease) = 0.02 P(B) = P(person doesn't have a disease) = 1- 0.02 =…
Q: Political pundits talk about the "bounce" that a presidential candidate gets after his party's…
A: Given: Sample Proportion 1 p^1=0.56 Sample Size 1 N1=1500 Sample Proportion 2 p^2=0.53 Sample Size 2…
Q: Political pundits talk about the "bounce" that a presidential candidate gets after his party's…
A:
Q: ollier got 14.9; Sheryl Swoopes got 15.0; Tina Thompson gets 15.1; Jewell Loyd gets 15.2 points;…
A: We want to find the test statistics and interpret
Q: Sam did a survey and found out that 92% of all seniors are ready to graduate and leave for college.…
A: From the provided information, 92% of all seniors are ready to graduate and leave for college that…
Q: opic pregnancy is twice as likely to develop when the pregnant woman is a smoker as it is when she…
A: Consider EP represents the event that the women have an ectopic pregnancy. Consider S represents the…
Q: A teacher sees students straggling into her class at highly diverse times. She secretly records…
A: Introduction: The lateness scores of the arriving students varied between 0 and 600; these scores…
Q: Elizabeth Loftus conducted research on eyewitness testimony. Participants watched a short video of a…
A: Given information: The data represents the results of test conducted for the data of car speed for…
Q: 27 The probability that a bachelor's degree recipient in 2006 majored in mathematics is 100 Cu Find…
A: Given that probability is 27/ 100 = 0.27 The odds of a bachelor's degree recipient in 2006 majoring…
Q: An outdoor hot dog vendor sells an average of 50 hot dogs per day in dry weather and a average of 15…
A: Given that the weather in this area is wet 20% of the time. So (100-20)=80% time it is dry. Let us…
Q: A popular blog reports that 45% of college students log in to Instagram on a daily basis. The Dean…
A: Given that:Sample size, Number of students logging in daily (Number of favorable cases), Level of…
Q: 1. An egg-guarding female can produce 2 clutches of 100 eggs (each) in a season, with a survival…
A: An egg-guarding female produces 2 clutches of 100 eggs with 50% survival rate and 95% maternity. An…
Q: A small town has one fire truck and one ambulance. The chance that the fire car can be used when…
A: From the provided information, The chance that the fire car can be used when needed = 98% Let A be…
Q: Political pundits talk about the "bounce" that a presidential candidate gets after his party's…
A: There are two independent populations which are after the convention and before the convention. We…
Q: In a recent article published by Scientific American found that only 82% of Millennials are certain…
A: We have given that Sample size n =75 Favorable cases x =68 Sample proportion p^=x/n =68/75 =0.9067
Q: There are 2 different fire alarm systems in the store. System A detects fire with a probability of…
A: We will install the system having highest reliability For System A : Reliability = 0.92 OR 92%…
Q: An epidemiologists is studying two populations that have recently had an outbreak of a disease with…
A: Prevalence of a disease refers to the proportion of persons in a population suffering from a…
Q: Luke's teacher has assigned each student in his class an online quiz, which is made up of 10…
A: 10 multiple choice questions with 4 choices each Teacher gives 3 chance And in which test student…
Q: From 2000 to 2023, the number of people in Virginia (in millions) can be modeled by P=0.08x+6.97…
A: Given that the number of people in Virginia (in millions) can be modeled by, where corresponds to…
Q: Sean is the star shortstop for his baseball team. He notices that his team typically scores about…
A:
Q: Tuff Rubbers, a tire manufacturer, knows that 5% of the tires it produces are defective. To reduce…
A: a) Let's express each of the probabilities in terms of the events D (defective tire) and T (test…
Q: a certain city, projections for the next year indicate there is a 20% chance that electronics jobs…
A: As per the indications of the next year's projections for the city:The chances of electronic jobs…
The Falcons’ starting running back injured his knee in last week’s game. There is a 35% chance that he will play in the next game. If he can play in the next game, he will likely rush 80 yards. If he does not play, the backup running back will likely rush 60 yards. Find the
Let X denote the rush
X = 80 with a probability of 0.35
and X = 60 with a probability of 0.65
Expected value:
E(X)=80*0.35 + 60*0.65 = 67
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- A private opinion poll is conducted for a politician to determine what proportion of the population favors decriminalizing marijuana possession. How large a sample is needed in order to be 98% confident that the sample proportion will not differ from the true proportion by more than 5%?An outdoor hot dog vendor sells an average of 70 hot dogs per day in dry weather and an average of 25 hot dogs in rainy weather. If the weather in this area is rainy 20% if the time, determine the expected number of hot dogs sold per day.A low resting heart rate can mean a high degree of physical fitness, which is associated with reducedrates of cardiac events like heart attacks. By working out regularly in the gym, the heart becomes moreefficient, pumping the lowest amount of blood one needs when in a relaxed state. Normal resting heartrate for adults ranges from 60 to 100 beats per minute but a well-trained athlete can have a normal restingheart rate as low as 40 beats per minute. Dr. Castillejo wants to know if her gym members have attainedthis average resting heart rate of athletes. Use the R commander output below to address Dr. Castillejo’sconcern . Write a brief report about the analysis by identifying the set of hypotheses to be tested, theappropriate test to use, and implications and recommendations of/from the conclusions.
- A low resting heart rate can mean a high degree of physical fitness, which is associated with reduced rates of cardiac events like heart attacks. By working out regularly in the gym, the heart becomes more efficient, pumping the lowest amount of blood one needs when in a relaxed state. Normal resting heart rate for adults ranges from 60 to 100 beats per minute but a well-trained athlete can have a normal resting heart rate of 40 beats per minute. Dr. Castillejo wants to know if her gym members have attained this average resting heart rate of athletes. Use the R commander output below to address Dr. Castillejo's concern . Write a brief report about the analysis by identifying the set of hypotheses to be tested, the appropriate test to use, and implications and recommendations of/from the conclusions. R COMMANDER OUTPUT R COMMANDER OUTPUT Shapiro-Wilk normality test data: restpulse w = 0.97057, p-value = 0.24418 One Sample t-test data: restpulse t = 17.41684, df = 49,p-value < 0.00001 R…Suppose you are the master of the mint. If you sample 200 coins and the king has set the error tolerance at 1 ounce for individual coins, and each coin should weight 1 ounce. What is the error in the sum of the 200 coins. Round to two places.Please select between the two options and answer question 6
- Shenise is a star player for her women's basketball team. She has injured her ankle, and it is doubtful that she will be able to play in an upcoming game. If Shenise can play, the coach estimates that the team will score 91 points. If Shenise is not able to play, the coach estimates that they will score 70 points. The team doctor estimates that there is a 70% chance Shenise will play. Determine the number of points the team can expect to score.You believed that sending positive thoughts to your classmates that have been so much bothered with virtual classes will change their performance. You got their prelim grades before you send them bunch of thoughtful messages then got their midterm grades. Did your positive messages somehow made difference in their performance?For one month, 500 elementary students kept a daily record of the hours they spent watching television. The average number of hours per week spent watching television was 28. The researchers conducting the study also obtained report cards for each of the students. They found that the students who did well in school tended to spend less time watching television than those students who did poorly. Listed are several possible statements concerning the results of this research. Place a check by every statement that you agree with based on this study. a. Even though students who did well watched less television, this doesn't necessarily mean that watching television hurts school performance. b. One month is not a long enough period of time to estimate how many hours the students really spend watching television. c. The sample of 500 is too small to permit drawing conclusions about elementary students in general. d. I don't agree with any of these statements. e. If a student decreased the…
- A survey shows that 3 out of 4 of those drink coffee in a town with a population is 7900 adults how many of these adults would you expect to drink coffee?AJ’s sleep pattern had been fluctuating due to stress and diet, so he started to keep a diary of how many hours he slept each night. On the 4th night after he started the diary, AJ slept 9.4 hours, which was the most sleep he got any night. Gradually, he got less sleep each successive night until, on the 18th night after he started the diary, AJ slept 6.2 hours, which was the least sleep he got any night. After keeping his diary for 6 months, he realized that the number of hours he got each night followed a sinusoidal curve. Let t be the number of nights since he started his diary, and s be how many hours he slept that night. It may be helpful to draw a crude sketch of the sleep time function and label the known t − and s − values on it. POSITIVE or NEGATIVE SIN or COS Maximum s − value = Minimum s − value = ______________ ______________ Middle s − value = ______________ = D Amplitude = ______________ = A ⇒ B = ______________ Given the crude sketch of the height function, the…A student is on pace to complete 60% of the work in the course and to have 8 absences. Predict their overall mark in the course using the best predictor. Show your calculations below.