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A researcher investigated the number of days patients spend at a hospital. Patients were randomly selected from four regions and the number of days each patient spent at a hospital was recorded. At α=0.10, can the researcher reject the claim that the
A. Identify the degrees of freedom for the numerator and for the denominator, determine the critical value.
B. Calculate the Test Statistic
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- At a financial institution, a fraud detection system identifies suspicious transactions and sends them to a specialist for review. The specialist reviews the transaction, the customer profile, and past history. If there is sufficient evidence of fraud, the transaction is blocked. Based on past history, the specialist blocks 40 percent of the suspicious transactions. Assume a suspicious transaction is independent of other suspicious transactions. Suppose the specialist wants to know the number of suspicious transactions that will need to be reviewed until reaching the first transaction that will be blocked. (i) Define the random variable of interest and state how the variable is distributed. (ii) Determine the expected value of the random variable and interpret the expected value in context.Statistical Abstracts , (117th ed.),reports average travel time to work for commuters in the New England states to be ( to the nearest minute): 17 , 21, 18 , 26 , 17 , 23 . What is the median of these commuting times ? Round your answer to one decimal place , if necessary .1. Calculate the incidence rate from June 1, 2018 to May 31, 2019 using the midpoint population as the denominator. Express your answer as a percentage. 2. Calculate the point prevalence on December 1, 2018. Express your answer as a percentage. 3. Calculate the period prevalence from June 1, 2018 to May 31, 2019. Express your answer as a percentage.
- A nationwide award for high school students is given to outstanding students who are sophomores, juniors, or seniors (freshmen are not eligible). Of the award-winners, 64 percent are SENIORS, 24 percent JUNIORS, and 12 percent are SOPHOMORES. NOTE: Your answers below should be entered as decimal numbers. Do not round during intermediate steps. If you round an answer, make sure you do so correctly and keep at least three decimal places. (a) Suppose we select award-winners one at a time and continue selecting until a SENIOR is selected. What is the probability that we will select exactly 3 award-winners? (b) Suppose we select award-winners one at a time and continue selecting until a JUNIOR is selected. What is the probability that we will select more than 2 award-winners? (c) Suppose we select award-winners one at a time continue selecting until a SOPHOMORE is selected. What is the probability that we will select 2 or fewer award-winners?Use this data and predict an apartment's monthly rent base on its square footage. If you find an apartment with 950 square feet, what should you expect to pay in rent? (Enter a whole number) Monthly Rent Square Feet $815.00 679 $695.00 890 $930.00 1165 $799.00 692 $995.00 1020 $825.00 679 $857.00 1065 $599.00 708 $1,015.00 1104 $750.00 639 $725.00 1000 $990.00 848 $960.00 958 $750.00 954 $910.00 1165 $820.00 839 $775.00 725 $999.00 985 $760.00 720 $790.00 824 $830.00 759 $900.00 912 $950.00 1080 $800.00 780 $820.00 628 $800.00 650 $820.00 721 $810.00 875 $770.00 912 $750.00 900 $825.00 655 $800.00 760 $850.00 980 $960.00 920Genetics counselors assess individual or family risk for a variety of inherited conditions, such as genetic disordersand birth defects. They provide information and support to other healthcare providers, or to individuals and familiesconcerned with the risk of inherited conditions. They work in university medical centers, private and public hospitals, and physicians' offices. They work with families, patients, and other medical professionals. Most work full time and typically need a master's degree. The median annual wage for genetic counselors was $67,500 in May, 2014.SOURCE: Bureau of Labor and Statistics, U.S. Department of Labor, Occupational Outlook Handbook , 2016 -2017 Edition, Genetics Counselors .Sickle cell disease is an inherited blood disorder that affects red blood cells. Since it is a recessive disorder, aperson inheriting two sickle cell genes will have the disease, whereas a person inheriting only one sickle cell genewill be healthy, but will carry the sickle cell…
- The period of increased risk following the exposure is referred to as which of the following? Group of answer choices Latent period Hazard period Critical period Induction periodIf there is no seasonal effect on human births, we would expect equal numbers of children to be born in each season (winter, spring, summer, and fall). A student takes a census of her statistics class and finds that of the 120 students in the class, 24 were born in winter, 36 in spring, 32 in summer, and 28 in fall. She wonders if the excess in the spring is an indication that births are not uniform throughout the year. Complete parts a through c below. Question content area bottom Part 1 a) Compute the standardized residual for each season. Standardized Residual Winter Spring Summer FallTim is interested in studying whether Cognitive Behavioural Therapy (CBT) is an effective treatment for Obsessive Compulsive Disorder (OCD). Six people who were diagnosed with OCD participated in Tim's study, where he recorded the number of times they washed their hands per day for one month. They were then given a three week intensive CBT program before their hand-washing was monitored for another month. The average number of times per day each participant washed their hands over the two months of observation are as follows: Participant Month 1 Month 2 1 11 6 2 8 5 3 14 17 4 10 10 5 22 11 6 15 10 Compute the appropriate statistic to determine whether the program was effective and use this information to fill in the blanks: Q1. revealed that the number of times per day participants washed their hands following the CBT program was Q2. compared to the number of times per day participants washed their hands before the…
