A sample of 40 sales receipts from a grocery store has X= $137 and o = $30. 20. Use these values to test whether or not the mean is sales at the grocery store are different from $150 at the a = 5% significance level. {Please note != means "not equal"} a) State the null hypothesis (include the symbol (=, !=, >, <) and the value): Ho: U =150 b) State the alternative hypothesis (include the symbol (=, !=, >, <) and the value): Ha: U !=150 c) Find the critical z or t score(s) on the table: 1.96 d) In interval notation, state the conditions under which you REJECT THE NULL (Ho) AND ACCEPT THE ALTERNATIVE (Ha): e) In interval notation, state the conditions under which you FAIL TO REJECT THE NULL (Ho): f) Calculate the test statistic (to two decimals): g) Answer the question (yes or no): Are the means sales different than $150? yes

Q: +2 S₁² S²3²¹ y²e²dxdy = f₁² y²dy ſ² e² dx

A: Given double integration ∫12∫34y2exdxdy

Q: Simplify. 5x x² + 2x 2 + 2x - 8 3 x + 4

A:

Q: If A = A−¹ . 9 7 1 0 1 5 00 01

A: The matrix is given byTo determine: The inverse of the given matrix.Formula used:

Q: B through f

A: (b) A(7)=∫07f(t)dt=Area under the curve from x =0 to x =7=Area of triangle (from x =0 to x=1)-area…

Q: Find the values of x and y

A: in given right angle triangle as both side are equal it is isosceles right angle triangle

Q: H.W -2t o g+8g+254 =で9O20,j020

A: Given the second order differential equationy"+8y'+25y=e−2t

Q: r A D C

A: We have given a diagram;

Q: Given sec 8= √ 2 what is cos?

A:

Q: A physian would like to test the hypothesis that the mean body temperature ( indegrees fahrenheit)…

A:

Q: (A v B) A -C

A: Solution: The objective is to complete the truth table

Q: (3) ² What is the exact value of tan

A: Given trignometry function tan( 2π3 )

Q: Simplify. 5-2(2W-2) + w O-3w-9 O*3w+9 O 3w+9 O 3w-9

A:

Q: and

A:

Q: The table shows the movement of a stock for 30 randomly selected trading days. "Up" means the stock…

A:

Q: .2 y = 4 - x² and x +y = 2.

A:

Q: Solve. Enter your answers as a comma-separated list. v-10/v2-5v+4  =  3/v-1   -    5/v-4

A:

Q: What's T and P

A:

Q: ram, DG || EF

A: We know the properties of trapezium that, Only one pair of sides are parallel. Non-parallel sides…

Q: Let à = (-4, 2, -1) and b = (5, 0, -1). Find a . b.

A:

Q: stock b 1.3,   -3.5,   -5.4 ,   6.3,  -7.6,  9.2 find IQR

A: 1.3,   -3.5,   -5.4 ,   6.3,  -7.6,  9.2Sample of size(n)=6