At least 0.49 of car crashes occur within 2 miles of the
motorists home.
a) Express the null and alternative hypotheses in symbolic form for
this claim.
Ho: p=
Ha:
Use the following codes to enter the following symbols:
≥≥ enter >=
≤≤ enter <=
≠≠ enter !=
b) You decide to survey 100 adult Americans and find that 10 of car
crashes occur within 2 miles of the motorists home. Find the test
statistic. Round to two decimal places.
z=z=
c) What is the p-value? Round to 4 decimals.
p=p=
Based on a sample of 700 people, 55% owned cats
The test statistic is: (to 2 decimals)
The p-value is: (to 4 decimals)
Based on a sample of 400 people, 87% workers got their job
through networking
The test statistic is: (to 2 decimals)
The p-value is: (to 4 decimals)
The average student loan debt is reported to be $25,235. A
student belives that the student loan debt is higher in her area.
She takes a random sample of 100 college students in her area and
determines the mean to be $27,524 and the standard devition to be
$6000. Is there sufficient evidence to support the student' claim
at a 5% significance level?
a) Determine the null and alternative hypotheses.
H0H0: μ=μ=
HaHa: μμSelect an answer > not = < (Put in
the correct symbol and value)
b) Determine the test statistic. Round to two decimals.
t=t=
c) Find the p-value. Round to 4 decimals.
P-value =
In 2011, a U.S. Census report determined that 71% of college
students work. A researcher thinks this percentage has changed
since then. A survey of 110 college students reported that 91 of
them work. Is there evidence to support the reasearcher's claim at
the 1% significance level?
a) Determine the null and alternative hypotheses.
H0 p=
HaH: pp
Select an answer not = < > (Put in the
correct symbol and value)
b) Determine the test statistic. Round to two decimals.
z=z=
c) Find the p-value. Round to 4 decimals.
P-value =
At least 0.49 of car crashes occur within 2 miles of the
motorists home.
a)
As, the claim is that at least 0.49 of car crashes occur within
2 miles
Ho: p= 0.49
Ha: p 0.49
b)
Sample proportion = 10 / 100 = 0.1
Standard error of the proportion = = 0.04999
Test statistic, z = (Observed proportion - Hypothesized Proportion) / Standard error
= (0.1 - 0.49) / 0.04999 = -7.8
c)
P-value = P(z > -7.8) = 1
As, p-value is greater than significance level 0f 0.05, we fail to reject H0 and conclude that there is no significant evidence that p 0.49 (at least 0.49 of car crashes occur within 2 miles of the motorists home)
At least 0.49 of car crashes occur within 2 miles of the motorists home. a) Express...
77% of car crashes occur within 2 miles of the motorists home. A researcher feels this percentage has increased. Express the null and alternative hypotheses in symbolic form for this claim (enter as a percentage) Но: Hа: Use the following codes to enter the following symbols: enter enter <= enter !
The average student loan debt is reported to be $25,235. A student belives that the student loan debt is higher in her area. She takes a random sample of 100 college students in her area and determines the mean to be $27,524 and the standard devition to be $6000. Is there sufficient evidence to support the student' claim at a 5% significance level? a) Determine the null and alternative hypotheses. H:H= H: Select an answer (Put in the correct symbol...
The average student loan debt is reported to be $25,235. A student belives that the student loan debt is higher in her area. She takes a random sample of 100 college students in her area and determines the mean to be $27,524 and the standard devition to be $6000. Is there sufficient evidence to support the student' claim at a 5% significance level? a) Determine the null and alternative hypotheses. Ho: d = Ho: Select an answer (Put in the...
The average student-loan debt is reported to be $25,235. A student believes that the student-loan debt is higher in her area. She takes a random sample of 100 college students in her area and determines the mean student-loan debt is $27,524 and the standard deviation is $6,000. Is there sufficient evidence to support the student's claim at a 5% significance level? Preliminary: Is it safe to assume that n≤5% of all college students in the local area? Yes No Is...
In 2011, a U.S. Census report determined that 71% of college students work. A researcher thinks this percentage has changed since then. A survey of 110 college students reported that 91 of them work. Is there evidence to support the reasearcher's claim at the 1% significance level? A normal probability plot indicates that the population is normally distributed. a) Determine the null and alternative hypotheses. Ho: p = H:P Select an answer (Put in the correct symbol and value) b)...
n 2011, a U.S. Census report determined that 71% of college students work. A researcher thinks this percentage has changed since then. A survey of 110 college students reported that 91 of them work. Is there evidence to support the reasearcher's claim at the 1% significance level? A normal probability plot indicates that the population is normally distributed. a) Determine the null and alternative hypotheses. H0: p= Ha: p Select an answer not = ,< ,> (Put in the correct symbol...
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