Use the following scenario to answer the next 2 questions.A local bank needs information concerning the checking account balances of its customers. A random sample of 20 accounts was checked. The mean balance was $690 with a standard deviation of $250. Fill in the blanks with the appropriate values from the situation given above.  If the value does not apply to this problem, leave it blank.μ=x= σ= s= n= d.f.=

A local bank needs information concerning the checking account balances of its customers. A random sample of 20 accounts was checked. The mean balance was $690 with a standard deviation of $250.Construct a 98% confidence interval for the population mean.  Write the interval in interval notation, rounding to one decimal place.

Use the following scenario to answer the next 2 questions.In a sample of 20 randomly selected women, it was found that their mean height was 65.1 inches. From previous studies, it is assumed that the population standard deviation is 2.6 and the population of height measurements is normally distributed. Fill in the blanks with the appropriate values from the situation given above.  If the value does not apply to this problem, leave it blank.μ=x=σ=s=n=d.f.=

Remember to show your workspace during the duration of the exam.  Be sure to show work on your paper even though you are answering the questions in Blackboard. Upload your written work to Gradescope, along with your notecard before closing out of this exam and HonorLock.Ensure your phone is face down but in view of the camera during the entire test.Be sure your eyes are not covered by anything during the test (i.e. holding a calculator up to cover your face is not acceptable, or having the camera positioned so that your eyes are cut off the top of the viewing window is also not acceptable, etc.)Good luck!!

In a sample of 20 randomly selected women, it was found that their mean height was 65.1 inches. From previous studies, it is assumed that the population standard deviation is 2.6 and the population of height measurements is normally distributed.Construct a 99% confidence interval for the population mean.  Write the interval in interval notation, rounding to one decimal place.

You wish to estimate, with 90% confidence, the population proportion of U.S. adults who have taken or planned to take a winter vacation in a recent year. Your estimate must be accurate within 5% of the population proportion. Find the minimum sample size needed, using a prior study that found that 38% of U.S. adults have taken or planned to take a winter vacation in a recent year.

Leche de magnesiaLa nicotinaLa vacuna de la CovidHidrocortisona 2%AcetaminofénAlbuterol (asma)

Starbucks has faced pressure to raise prices due to significantly increased coffee bean costs, with Arabica prices soaring by over 300% from 2020 lows and continuing to jump in 2025. This is an example of    

A sudden change in control values that remains at the new level is called:

China will ban hidden, retractable door handles on new electric vehicles starting January 1, 2027, due to the safety risks where occupants were trapped inside during emergencies. This is an example of