The following null and alternative hypotheses are given: Ho : µ = 920 H : µ > 920 where the standard deviation o = 46, and the sample size n = 26. Part A Write the expression of the transformation from x-values to z-values: Use mu for the mean, u sigma for the standard deviation, a X for the random variable, X n for the sample size, n sqrt( ) for the square roots. Part B Write the critical z-value of standard normal distribution (from spreadsheet or look-up tables): Za For this test take a = 0.04. Part C Calculate the upper and lower x-values corresponding to critical z-values, za and – za, respectively: a'crit,U Terit,L

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The following null and alternative hypotheses are given:
Но : д — 920
H1 : µ > 920
where the standard deviation o = 46, and the sample size n = 26.
Part A
Write the expression of the transformation from x-values to z-values:
Z =
Use
mu for the mean, u
sigma for the standard deviation, o
x for the random variable, X
n for the sample size, n
) for the square roots.
sqrt(
Part B
Write the critical z-value of standard normal distribution (from spreadsheet or look-up tables):
Za
For this test take a = 0.04.
Part C
Calculate the upper and lower x-values corresponding to critical z-values, za and –za. respectively:
Xcrit,U
Icrit,L
Transcribed Image Text:The following null and alternative hypotheses are given: Но : д — 920 H1 : µ > 920 where the standard deviation o = 46, and the sample size n = 26. Part A Write the expression of the transformation from x-values to z-values: Z = Use mu for the mean, u sigma for the standard deviation, o x for the random variable, X n for the sample size, n ) for the square roots. sqrt( Part B Write the critical z-value of standard normal distribution (from spreadsheet or look-up tables): Za For this test take a = 0.04. Part C Calculate the upper and lower x-values corresponding to critical z-values, za and –za. respectively: Xcrit,U Icrit,L
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