Login
Premium
Home Question Bank Math Statistics Archive 2024 December 01

Statistics Questions from Dec 01,2024

Browse the Statistics Q&A Archive for Dec 01,2024, featuring a collection of homework questions and answers from this day. Find detailed solutions to enhance your understanding.

error msg
Question 4 (Muttiple Choice Worth 2 points) (03 01 MC ) Ophthalmology students compared two types of detached retina surgery to determine if patients were able to regain vision. They studied laser surgery and freezing treatment. Identify the response and explanatory variables. The response variable is the type of retina surgery, and the explanatory variable is the amount of vision the patients obtained after surgery. The response variable is the amount of vision the patients obtained after surgery, and the explanatory variable is the type of retina surgery. The response variable is laser surgery, and the explanatory variable is freezing treatment. The response variable is freezing treatment, and the explanatory variable is the amount of vision the patients obtained after surgery. Use a normal approximation to find the probability of the indicated number of voters. In this case, assume that 178 eligible voters aged 18-24 are randomly selected. Suppose a previous study showed that among eligible voters aged \( 18-24,22 \% \) of them voted. Probability that exactly 45 voted The probability that exactly 45 of 178 eligible voters voted is (Round to four decimal places as needed.) Use the sample data and confidence level given below to complete parts (a) through (d). In a study of cell phone use and brain hemispheric dominance, an internet survey was e-mailed to 2351 subjects randomly selected from an online group involved with ears. 1141 surveys were returned. Construct a \( 99 \% \) confidence interval for the proportion of returned surveys. Click the icon to view a table of \( z \) scores. What is a scatter plot? Comparing Data Sets Assignment Activo Explaining How to Find a Trend Line Given data for different baseball teams' number of home runs and wins for the past season, how would you find the equation of the trend line? [16] Four different doses of a particular drug are compared on their effect on the level of a biomarker. The study involves 28 subjects, and equal numbers of subjects are randomly assigned to each dose group. The biomarker is known to be normally distributed in the populations involved. (a) [4] What are the null and alternative hypotheses in the comparison? Using the p value, do the data provide sufficient evidence to indicate that the mean of tar content in the Brand B cigarettes is lower than that of Brand A at \( 5 \% \) significance level? A quality-control inspector examined 240 calculators and found 14 of them to be defective. At this rate, how many defective calculators will there be in a batch of 8,640 calculato 18, This quiz: 18 point(s) possible 4. On estime que 1400 passagers ont réservé, le vendredi soir, sur le TGV Tanger-Casablanca de 19 h 30 . Les portes du train ouvrent une demi-heure avant le départ. Parmi les usagers, 50 arrivent avant l'ouverture des portes et 70 arrivent trop tard. On considère la variable aléatoire X , égale à la date d'arrivée d'un voyageur calculée par rapport à \( 19 \mathrm{~h} 30 .(\mathrm{X}=0 \) à 19 h 30 et X est exprimé en minutes). a. En admettant que cette variable X suit une loi normale de moyenne m et d'écart type \( \sigma \), Déterminer m et \( \sigma \). b. Quel est le nombre de voyageurs qui montent dans le TGV entre 19 h et 19 h 15 ? Après 19hl5? c. Déterminer l'heure à laquelle les portes du train doivent être ouvertes pour qu'il n'y ait pas plus de 20 usagers qui attendent sur le quai. d. Calculer le nombre de voyageurs ayant manqué le train si celui-ci accuse un retard de 5
Prev 1
...
13 14 15 16 17 18 Next
1
...
13 14 15 16 17 18
Prev Next
Study can be a real struggle
Why not UpStudy it?
Select your plan below
Premium

You can enjoy

Start now
  • Step-by-step explanations
  • 24/7 expert live tutors
  • Unlimited number of questions
  • No interruptions
  • Full access to Answer and Solution
  • Full Access to PDF Chat, UpStudy Chat, Browsing Chat
Basic

Totally free but limited

  • Limited Solution
Welcome to UpStudy!
Please sign in to continue the Thoth AI Chat journey
Continue with Email
Or continue with
By clicking “Sign in”, you agree to our Terms of Use & Privacy Policy