Betty recorded the number of visitors at her art gallery during the week: Day Visitor
Tuesday 28
Wednesday 20
Thursday 18
Friday 14
She expected to have 20 visitors each day. To determine whether the number of visitors follows a uniform distribution, a chi-square test for goodness of fit should be performed (alpha = 0.10).
X^2 = Σ(O - E^2)/E
Using the data above, what is the chi-square test statistic?

answer: a and c are correct

step-by-step explanation:

the +5 is the vertical translation

the added negative symbol in front is the reflection over the y-axis

< coa = 150 ( given)

as ba and bc are tangents

so oc and oa is perpendicular to cb and ab respectively because in circle normal passes through centre

so in quadrilateral oabc

< coa + < oab + < ocb + < abc = 360

150 +90+90 + < abc = 360

330 + < abc = 360

< abc = 360 -330 = 30

so < abc = 30

⭐dhruv⭐

the correct answer is d

hope this

chicken nugget stir fry

step-by-step explanation: