Parameters and hypotheses For each of the followingsituations, define the parameter (proportion or mean) and write the null and alternative hypotheses in terms of param-eter values. Example: We want to know if the proportion of up days in the stock market is 50%. Answer: Let p = theproportion of up days. Ho: p = 0.5 vs. HA: p ≠ 0.5.a) A casino wants to know if their slot machine reallydelivers the 1 in 100 win rate that it claims.b) A pharmaceutical company wonders if their new drughas a cure rate different from the 30% reported by theplacebo.c) A bank wants to know if the percentage of customersusing their website has changed from the 40% thatused it before their system crashed last week.
Parameters and hypotheses For each of the followingsituations, define the parameter (proportion or mean) and write the null and alternative hypotheses in terms of param-eter values. Example: We want to know if the proportion of up days in the stock market is 50%. Answer: Let p = theproportion of up days. Ho: p = 0.5 vs. HA: p ≠ 0.5.a) A casino wants to know if their slot machine reallydelivers the 1 in 100 win rate that it claims.b) A pharmaceutical company wonders if their new drughas a cure rate different from the 30% reported by theplacebo.c) A bank wants to know if the percentage of customersusing their website has changed from the 40% thatused it before their system crashed last week.
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.8: Probability
Problem 10E
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Question
Parameters and hypotheses For each of the following
situations, define the parameter (proportion or mean) and
situations, define the parameter (proportion or mean) and
write the null and alternative hypotheses in terms of param-
eter values. Example: We want to know if the proportion of
eter values. Example: We want to know if the proportion of
up days in the stock market is 50%. Answer: Let p = the
proportion of up days. Ho: p = 0.5 vs. HA: p ≠ 0.5.
a) A casino wants to know if their slot machine really
delivers the 1 in 100 win rate that it claims.b) A pharmaceutical company wonders if their new drug
has a cure rate different from the 30% reported by the
placebo.
c) A bank wants to know if the percentage of customers
using their website has changed from the 40% that
used it before their system crashed last week.
proportion of up days. Ho: p = 0.5 vs. HA: p ≠ 0.5.
a) A casino wants to know if their slot machine really
delivers the 1 in 100 win rate that it claims.b) A pharmaceutical company wonders if their new drug
has a cure rate different from the 30% reported by the
placebo.
c) A bank wants to know if the percentage of customers
using their website has changed from the 40% that
used it before their system crashed last week.
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