91影视

We have been given the opinions of black, Hispanic, and white parents' opinions about high schools.

a =significanceposition(supposition) The invalidenterprisecountriesthat there is nodiscrepancywithin thedispersionof the categorical variable for each of the populations/ treatments. Theoptionalpropositioncountriesthat there is adifference.

Ho Thedissipationofsuppositionis thesamefor eachrace.
Ha The dissipation of supposition is not the same for each race. The anticipated frequentness E are the item of the column and push add up to, separated by the table add up to.

$$\begin{gathered} E\_11=(r\_1脳c\_1)/n=(68脳202)/605鈮�22.70 \\ E\_12=(r\_1脳c\_2)/n=(68脳202)/605鈮�22.70 \\ E\_13=(r\_1脳c\_3)/n=(68脳201)/605鈮�22.59 \\ E\_21=(r\_2脳c\_1)/n=(205脳202)/605鈮�68.45 \\ E\_22=(r\_2脳c\_2)/n=(205脳202)/605鈮�68.45 \\ E\_23=(r\_2脳c\_3)/n=(205脳201)/605鈮�68.11 \\ E\_31=(r\_3脳c\_1)/n=(196脳202)/605鈮�65.44 \\ E\_32=(r\_3脳c\_2)/n=(196脳202)/605鈮�65.44 \\ E\_33=(r\_3脳c\_3)/n=(196脳201)/605鈮�65.12 \\ E\_41=(r\_4脳c\_1)/n=(72脳202)/605鈮�24.04 \\ E\_42=(r\_4脳c\_2)/n=(72脳202)/605鈮�24.04 \\ E\_43=(r\_4脳c\_3)/n=(72脳201)/605鈮�23.92 \\ E\_51=(r\_5脳c\_1)/n=(64脳202)/605鈮�21.37 \\ E\_52=(r\_5脳c\_2)/n=(64脳202)/605鈮�21.37 \\ E\_53=(r\_5脳c\_3)/n=(64脳201)/605鈮�21.26) \end{gathered}$$

Conditions The conditions for performing a ki-square test of unity/ independence are Arbitrary, Autonomous, Huge counts Random Fulfilled, since the bunches of guardians were aimlessly named. Independent Fulfilled, since the individualities are lower than of all individualities( since there are further than people). Large checks Fulfilled, since all anticipated censuses are at fewest. Since all conditions are fulfilled, it's fitting to carry out a test of unity/ independence.

The value of the test- statistic is also the sum of the ki-square subtotals

$$\begin{gathered} 蠂^2\&=鈭�\left(\right(O-E)^2)/E \\ =\left(\right(12-22.70)^2)/22.70+\left(\right(34-22.70)^2)/22.70+\left(\right(22-22.59)^2)/22.59 \\ +\left(\right(69-68.45)^2)/68.45+\left(\right(55-68.45)^2)/68.45+\left(\right(81-68.11)^2)/68.11 \\ +\left(\right(75-65.44)^2)/65.44+\left(\right(61-65.44)^2)/65.44+\left(\right(60-65.12)^2)/65.12+\left(\right(24-24.04)^2)/24.04+\left(\right(24-24.04)^2)/24.04+\left(\right(24-23.92)^2)/23.92 \\ +\left(\right(22-21.37)^2)/21.37+\left(\right(28-21.37)^2)/21.37+\left(\right(14-21.26)^2)/21.26 \\ 鈮�22.4261 \end{gathered}$$

The- value is the liability of getting the regard of the test dimension, or a regard more extraordinary. The- value is the number( or interval) within the column title of the ki-square vehicle table within the reference section containing the value $X^2$in the row$df=(r-1)(c-1)=(5-1)(3-1)=8$

$0.0025<P<0.005$

Since the value of $P$is less than $0.05$

The thesis is rejected