Tema
Q:
De una muestra aleatoria de 1.203 estudiantes de contaduría de cierto año, el \( 20,2 \% \) afirı
que la oferta laboral era muy mal pagada. De una muestra aleatoria de 1.203 estudian
de empresariales en otro año posterior, el \( 13,2 \% \) compartían dicha opinión. Calcule un
tervalo de confianza del \( 99 \% \) para la diferencia entre las proporciones poblacionales.
Q:
g) Of the " \( r \) " values below which would be reasonable for the scatterplot above? Explai
your reasoning. \( r=-.94 \quad r=-.32 \quad r=.32 \quad r=.94 \)
Q:
Step 4: Determine citical Value
Twot aided test \( \bar{w} \) a \( =0.05 \) and \( n-1=15 \) (df
Use + distrubution table \( = \pm 2.131 \)
Q:
3) Find the missing \( z \)-number: \( \mathrm{p}(z<c)=0.7 \). You must sketch, shade, and label a bell curve for credit.
4) Out of 400 people surveyed, 181 answered 'yes' to having a Netflix account. Find the margin of error
Q:
2) Compute: \( \mathrm{p}(0.8<z<2.19) \). You must sketch, shade, and label a bell curve for credit.
3) Find the missing z-number: \( \mathrm{p}(\mathrm{z}<\mathrm{c})=0.7 \). You must sketch, shade, and label a bell curve for credit.
Q:
Question \( 4(0.25 \) points) Retake question \( \checkmark \) Saved
Select all the ways that one could correctly write a confidence interval.
point estimate \( \pm \) margin of error
\( (0.035,0.145) \)
\( \widehat{p} \pm 1.96^{*} S E \)
Q:
A local TV station wished to determine if a higher proprotion of women watch the local news. They conduct
a survey of 200 women and 200 men. Of those surveyed, \( 59 \% \) of women and \( 51 \% \) of men say they watch
the local news.
Find the P-value: Type your answer as a decimial rounded to three decimal places. Do not type a
percentage or a percent sign.
P-value=
Q:
Question 4 ( 0.25 points) Retake question
Select all the ways that one could correctly write a confidence interval.
point estimate \( \pm \) margin of error
\( (0.035,0.145) \)
\( \widehat{p} \pm 1.96^{*} S E \)
Q:
1d) sample standard deviation =
2) Compute: \( p(0.8<z<2.19) \). You must sketch, shade, and label a bell curve for credit.
Q:
Question 2 ( 0.25 points) Retake question
What is the \( z^{*} \) value for a \( 95 \% \) confidence interval?
1.96
2.58
\( \pm 1.96 \)
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