Welcome to ixamBee
Continue with your mobile number
Since the scores are normally distributed, we can use the z-score formula to standardize the scores and find the percentage of students who scored between 60 and 90. First, we need to find the z-score for a score of 60 and a score of 90. The z-score formula is: z = (x - μ) / σ where x is the score, μ is the mean, and σ is the standard deviation. For x = 60, we have: z = (60 - 75) / 10 = -1.5 For x = 90, we have: z = (90 - 75) / 10 = 1.5 Now we can use a z-score table or a calculator to find the percentage of students who scored between -1.5 and 1.5 standard deviations from the mean. This percentage represents the percentage of students who scored between 60 and 90 on the exam. Using a z-score table, we find that the percentage of students who scored between -1.5 and 1.5 is approximately 86.6%. Therefore, about 86.6% of the students scored between 60 and 90 on the exam.
Read the sentence to find out whether there is any grammatical or idiomatic error in it. The error, if any, will be in one part of the sentence. The nu...
I was told that it was a dangerous place where militants hid in the woods waiting for shoot any outsider who dared to go there.
This question consists of a sentence that is divided into four parts numbered (1) to (4). Only one part of the sentence is not acceptable in standard w...
Neither the central object also any of the material immediately around it can be observed at optical wavelengths because of the thick screen of interven...
Scenes from the film (a) / had to be censured (b) / before it was released (c) / No error (d)
There was a spurt in Kerala, with 28 new cases reported — the largest in any Indian state in a single day.
They had to put of the garden party because of the heavy rain.
In the following sentence, four words or phrases have been underlined. One of them is incorrect. Select the INCORRECT word or phrase from the given opti...
While Murati acknowledged the difficulty (1)/of leaving a company she has (2)/helped shape, she also shared (3)/her motivation for stepping away.(4)
Directions: In each of the questions, a sentence has been divided into four parts, one of which may contain an error. Identify that fragment and mark ...
