Mathematics, 26.03.2020 18:53 serenityburke
An airline transports over 10,000 passengers daily, and the airline is curious what proportion of their passengers use mobile boarding passes instead of paper passes. They take an SRS of 80 passengers and find that 60 of them use mobile boarding passes. Based on this sample, which of the following is a 95% confidence interval for the proportion of passengers who use mobile boarding passes?A. (0.625, 0.875) B. (0.637, 0.863) C. (0.655, 0.845) D. (0.670,0.830)
Answers: 3
confidence interval for the fraction of passengers who use mobile boarding cards, which may be calculated as
So ![\to 0.75 \pm 1.96 \times \sqrt{(\frac{0.75\times (1-0.75)}{80})}\\\\ \to 0.75 \pm 1.96 \times \sqrt{(\frac{0.75\times 0.25}{80})}\\\\ \to 0.75 \pm 1.96 \times \sqrt{(\frac{0.1875}{80})}\\\\ \to 0.75 \pm 1.96 \times \sqrt{(0.00234375)}\\\\ \to 0.75 \pm 1.96 \times 0.05\\\\ \to 0.75 \pm 0.098\\\\ \to 0.652So the [tex]95\%](/tpl/images/0565/3773/9ece1.png)
confidence interval for the proportion of passengers that utilize mobile boarding cards is somewhere between 0.652 and 0.848.
Another question on Mathematics
Mathematics, 21.06.2019 14:00
Find parametric equations for the line. (enter your answers as a comma-separated list of equations. let x, y, and z be functions of t.) the line in the direction of the vector 5 i + 5 j − 6k and through the point (−4, 4, −2).
Answers: 1
Mathematics, 22.06.2019 00:00
Can someone plz me understand how to do these. plz, show work.in exercises 1-4, rewrite the expression in rational exponent form.[tex]\sqrt[4]{625} \sqrt[3]{512} (\sqrt[5]{4} )³ (\sqrt[4]{15} )^{7}\\ (\sqrt[3]{27} )^{2}[/tex]
Answers: 3
Mathematics, 22.06.2019 03:30
Acollection of nickels and quarters is worth $2.85. there are 3 more nickels than quarters.how many nickels and quarters are there?
Answers: 3
You know the right answer?
An airline transports over 10,000 passengers daily, and the airline is curious what proportion of th...
Questions
English, 24.10.2021 22:10
German, 24.10.2021 22:10
English, 24.10.2021 22:10
Biology, 24.10.2021 22:10
English, 24.10.2021 22:10
Mathematics, 24.10.2021 22:10
Arts, 24.10.2021 22:10
Mathematics, 24.10.2021 22:10
Mathematics, 24.10.2021 22:10
Mathematics, 24.10.2021 22:10
