A Construction contractor used the equation 11.52 = (1.44)8 to calculate how much 8 boxes of nails would cost him . How much would 2 boxes of nails cost him? Question solved general 10 months ago 8919

A 2003 study of dreaming found that out of a random sample of 113 people, 35 reported dreaming in color. However, the proportion reported dreaming in color that was established in the 1940s was 0.25. the researcher wants to determine if the proportion of individuals that dream in color has changed since the 1940s. use 0.10 level of significance.1. What is the normal approximation method appropriate for this test?2. compute appropriate test statistic.3. At a 0.10 level of significance, what are the critical values for the test.4. what Is the appropriate decision and conclude for the test at 0.10 level of significance (fail to reject, reject Ha)5. would your conclusion change if the test were to be conducted as an upper tailed test? Why or why not supporting your answer using the p-value approach. Question solved general 10 months ago 8745

A bag contains $3$ white chips and $3$ red chips. you repeatedly draw a chip at random from the bag. if it's white, you set it aside; if it's red, you put it back in the bag. after removing all $3$ white chips, you stop. what is the expected number of times you will draw from the bag? Question solved general 10 months ago 9360

Rampur Sarpanch requested one of his villager to donate a 6m wide land adjusted to his 132.8m long side of his right triangular plot outside the village . The other sides of the plot is 123m and 50m .On his donated land , the Sarpanch wants to construct a link road which provides the connectivity with the other villages and towns . The villager agreed at once . i) Find the area of the triangular plot remaining with the villager . Question solved general 10 months ago 4637

Zoe is making greeting cards, which she will sell by the box at an arts fair. She paid $48 for a booth at the fair, and the materials for each box of cards cost $6. She will sell the cards for $10 per box of cards. At some point, she will sell enough cards so that her sales cover her expenditures. How much will the sales and expenditures be? How many cards will that take? Question solved general 10 months ago 5132

the length of the rectangular garden is three feet less than twice its width. if the perimeter is 42 feet, what is its length? Question solved general 10 months ago 8321

You have a 10% off coupon for the paper towels that are 6.99. The tax rate is 8%. Find the discount amount and tax amount Question solved general 10 months ago 9267

Use sigma notation to represent the sum of the first six terms of the following sequence: −10, −13, −16, …the summation from n equals one to 6 of quantity negative 10 plus 3 times nthe summation from n equals one to 6 of quantity negative 7 minus 10 times n the summation from n equals one to 6 of quantity negative 7 minus 3 times nthe summation from n equals one to 6 of quantity negative 7 plus 3 times n Question solved general 10 months ago 3899

A ball is thrown vertically upward from the top of a building 160 feet tall with an initial velocity of 48 feet per second. The distance d (in feet) of the ball from the ground after t seconds is d(t) = 160 + 48t – 16t2. a. After how many seconds does the ball strike the ground? Write your answer in a complete sentence with proper grammar and correct spelling. b. When will the ball reach its maximum height? Question solved general 10 months ago 7015

A certain insect can beat its wings 170 times per second. Write an equation in slope-intercept form that shows the relationship between flying time in seconds and the number of times the insect beats its wings. Question solved general 10 months ago 2661

Which system of linear inequalities is represented by the graph?y≥2x + 1y≤2x - 2 Question solved general 10 months ago 4699

A science class has 4 girls and 4 boys in the seventh grade and 5 girls and 7 boys in the eighth grade. The teacher randomly selects a seventh grader and an eighth grader from the class for a competition. What is the probability that the students she selects are both girls? Question solved general 10 months ago 4467

Marketa used 4.5 cups of sugar for 5 batches of cookies if an equal amount was used for each batch how many cups of sugar were used for each batch draw models to help you divide. Asap please! Question solved general 10 months ago 7457

Kate purchased a box of 36 pencils to donate to Mr. Brown's class, but not all pencils were used. The ratio of pencils that were used to the pencils that did not use is 7 to 5. How many pencils were left from the box of pencils Kate bought? Question solved general 10 months ago 9270

A cylindrical paint can has a 6.5 inch inside diameter and is 7.75 inches high. It is being filled with paint at a rate of 120in^3/minute.How fast is the surface area of the inside of the can being coated with paint?I need help plz explain Question solved general 10 months ago 9165

A data analyst wants to set up a hypothesis test to determine if the mean number of courses taken in a college semester is different for freshmen, versus sophomores, versus juniors, versus seniors. Label these four groups of students as years 1, 2, 3, and 4. What would be the correct setup for the null and alternative hypotheses for this test? Question solved general 10 months ago 9278

A company studied the number of lost-time accidents occurring at its Brownsville, Texas, plant. Historical records show that 9% of the employees suffered lost-time accidents last year. Management believes that a special safety program will reduce such accidents to 8% during the current year. In addition, it estimates that 15% of employees who had lost-time accidents last year will experience a lost-time accident during the current year. Round your answers to three decimal places.a. What percentage of the employees will experience lost-time accidents in both years?b. What percentage of the employees will suffer at least one lost-time accident over the two-year period? Question solved general 10 months ago 3646

A company that produces ribbon has found that the marginal cost of producing x yards of fancy ribbon is given by Upper C prime left parenthesis x right parenthesisC′(x)equals=negative 0.00001 x squared minus 0.02 x plus 49−0.00001x2−0.02x+49 for x less than or equals 1400x≤1400, where Upper C prime left parenthesis x right parenthesisC′(x) is in cents. Approximate the total cost of manufacturing 14001400 yards of ribbon, using 5 subintervals over left bracket 0 comma 1400 right bracket[0,1400] and the left endpoint of each subinterval. Question solved general 10 months ago 5407