Ask question

Ask question

All categories

3 years ago

14

A department store, on average, has daily sales of $154.87. The standard deviation of sales is $24.67. On Tuesday, the store sol

d $101.69 worth of goods. Find Tuesday's z score.

1 answer:

sp2606 [1]3 years ago

6 0

Z-Score= x-value minus mean (average) / standard deviation so z score equals -2.16 or 1.54% below the mean based on table a

You might be interested in

Which expression is equivalent to (photo inserted) help asap please

alekssr [168]

The answer would be A!

Whenever there is a fraction in the exponent, the numerator is under the square root, and the denominator is on the outside of the square root!

Additionally, since the negative is outside of the square toot, then it also outside of the parenthesis.

8 0

3 years ago

Trigonometry word problems

astraxan [27]

From a point on the ground 47 feet from the foot of a tree, the angle of elevation of the top of the tree is 35º. Find the height of the tree to the nearest foot.

7 0

3 years ago

What is 1.1865 rounded to the nearest cent.

Artyom0805 [142]

Rounded to the nearest cent, the answer is 1.19

6 0

3 years ago

( 6x ^2 - x + 3 ) +( - 2x + x^2 - 7 )

alexandr1967 [171]

Answer:

7x² - 3x - 4

Step-by-step explanation:

<u>Step 1: Write expression</u>

(6x² - x + 3) + (-2x + x² - 7)

<u>Step 2: Combine like terms (x²)</u>

7x² - x + 3 - 2x - 7

<u>Step 3: Combine like terms (x)</u>

7x² - 3x + 3 - 7

<u>Step 4: Combine like terms (constants)</u>

7x² - 3x - 4

8 0

3 years ago

1. Type mmnn using exponents.

kompoz [17]

Step-by-step explanation:

$\bold{1.}\\\\\ mmnn=m^2n^2=(mn)^2\\\\\bold{2.}\\\\3x=5+7\\3x=12\qquad\text{divide both sides by 3}\\x=4\\\\\bold{3.}\\\\\dfrac{x}{3}=7\qquad\text{multiply both sides by 3}\\x=21\\\\\bold{4.}\\\\0.5x=12\qquad\text{multiply both sides by 2}\\1x=24\\x=24\\\\\bold{5.}\\\\4x-6=2x+4\qquad\text{add 6 to both sides}\\4x=2x+10\qquad\text{subtract 2x from both sides}\\2x=10\qquad\text{divide both sides by 2}\\x=5$

$\bold{6.}\\\\3x^2\ for\ x=6\ /\text{put x = 6 to the expression}/\\\\3(6)^2=3(36)=108\\\\\bold{7.}\\\\3y^2+2y\ for\ y=3\ /\text{put y = 3 to the expression}/\\\\3(3)^2+2(3)=3(9)+6=27+6=33$

7 0

4 years ago

Read 2 more answers